91572056 has 16 divisors (see below), whose sum is σ = 171917640. Its totient is φ = 45727360.

The previous prime is 91572043. The next prime is 91572119. The reversal of 91572056 is 65027519.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305 + ... + 13536.

Almost surely, 2^91572056 is an apocalyptic number.

It is an amenable number.

91572056 is a deficient number, since it is larger than the sum of its proper divisors (80345584).

91572056 is a wasteful number, since it uses less digits than its factorization.

91572056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14674 (or 14670 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 91572056 is about 9569.3289210895. The cubic root of 91572056 is about 450.7346944952.

The spelling of 91572056 in words is "ninety-one million, five hundred seventy-two thousand, fifty-six".