91256056 has 8 divisors (see below), whose sum is σ = 171105120. Its totient is φ = 45628024.

The previous prime is 91256029. The next prime is 91256063. The reversal of 91256056 is 65065219.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5703496 + ... + 5703511.

It is an arithmetic number, because the mean of its divisors is an integer number (21388140).

Almost surely, 2^91256056 is an apocalyptic number.

It is an amenable number.

91256056 is a deficient number, since it is larger than the sum of its proper divisors (79849064).

91256056 is a wasteful number, since it uses less digits than its factorization.

91256056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11407013 (or 11407009 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 91256056 is about 9552.8035675397. The cubic root of 91256056 is about 450.2156267027.

The spelling of 91256056 in words is "ninety-one million, two hundred fifty-six thousand, fifty-six".