# 75 (number)

 ← 74 75 76 →
Cardinal seventy-five
Ordinal 75th
(seventy-fifth)
Factorization 3 × 52
Divisors 1, 3, 5, 15, 25, 75
Roman numeral LXXV
Binary 10010112
Ternary 22103
Quaternary 10234
Quinary 3005
Senary 2036
Octal 1138
Duodecimal 6312
Vigesimal 3F20
Base 36 2336

75 (seventy-five) is the natural number following 74 and preceding 76.

## In mathematics

75 is:

Excluding the infinite sets, there are 75 uniform polyhedra (or 76 if edges are allowed to coincide).

Seventy-five is:

## References

1. "Sloane's A000670 : Fubini numbers: number of preferential arrangements of n labeled elements; or number of weak orders on n labeled elements; or number of ordered partitions of [n]". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
2. "Sloane's A002411 : Pentagonal pyramidal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
3. "Sloane's A001106 : 9-gonal (or enneagonal or nonagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
4. "Sloane's A007629 : Repfigit (REPetitive FIbonacci-like diGIT) numbers (or Keith numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
5. "Sloane's A003052 : Self numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
6. “Who are our senators and what do they do?”, Parliament of Canada, retrieved 2014-02-02.