80975855 has 16 divisors (see below), whose sum is σ = 98993664. Its totient is φ = 63574560.

The previous prime is 80975833. The next prime is 80975887. The reversal of 80975855 is 55857908.

It is a de Polignac number, because none of the positive numbers 2^k-80975855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108614 + ... + 109356.

It is an arithmetic number, because the mean of its divisors is an integer number (6187104).

Almost surely, 2^80975855 is an apocalyptic number.

80975855 is a deficient number, since it is larger than the sum of its proper divisors (18017809).

80975855 is a wasteful number, since it uses less digits than its factorization.

80975855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126.

The product of its (nonzero) digits is 504000, while the sum is 47.

The square root of 80975855 is about 8998.6585111338. The cubic root of 80975855 is about 432.6318753187.

The spelling of 80975855 in words is "eighty million, nine hundred seventy-five thousand, eight hundred fifty-five".