91055976 has 32 divisors (see below), whose sum is σ = 248335200. Its totient is φ = 27592640.

The previous prime is 91055971. The next prime is 91055977. The reversal of 91055976 is 67955019.

It is not an unprimeable number, because it can be changed into a prime (91055971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172191 + ... + 172718.

It is an arithmetic number, because the mean of its divisors is an integer number (7760475).

Almost surely, 2^91055976 is an apocalyptic number.

It is an amenable number.

91055976 is an abundant number, since it is smaller than the sum of its proper divisors (157279224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91055976 is a wasteful number, since it uses less digits than its factorization.

91055976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344929 (or 344925 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 91055976 is about 9542.3255027273. The cubic root of 91055976 is about 449.8863515472.

The spelling of 91055976 in words is "ninety-one million, fifty-five thousand, nine hundred seventy-six".