57225091 has 32 divisors (see below), whose sum is σ = 75456000. Its totient is φ = 42971040.

The previous prime is 57225073. The next prime is 57225139. The reversal of 57225091 is 19052275.

It is not a de Polignac number, because 57225091 - 2⁵ = 57225059 is a prime.

It is a super-2 number, since 2×57225091² = 6549422079916562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57225011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109156 + ... + 109678.

It is an arithmetic number, because the mean of its divisors is an integer number (2358000).

Almost surely, 2^57225091 is an apocalyptic number.

57225091 is a deficient number, since it is larger than the sum of its proper divisors (18230909).

57225091 is a wasteful number, since it uses less digits than its factorization.

57225091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 57225091 is about 7564.7267630761. The cubic root of 57225091 is about 385.3560342870.

The spelling of 57225091 in words is "fifty-seven million, two hundred twenty-five thousand, ninety-one".