57249285 has 32 divisors (see below), whose sum is σ = 97396992. Its totient is φ = 28615680.

The previous prime is 57249263. The next prime is 57249317. The reversal of 57249285 is 58294275.

It is not a de Polignac number, because 57249285 - 2⁵ = 57249253 is a prime.

It is a super-2 number, since 2×57249285² = 6554961266022450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117312 + ... + 117798.

It is an arithmetic number, because the mean of its divisors is an integer number (3043656).

Almost surely, 2^57249285 is an apocalyptic number.

It is an amenable number.

57249285 is a deficient number, since it is larger than the sum of its proper divisors (40147707).

57249285 is a wasteful number, since it uses less digits than its factorization.

57249285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973.

The product of its digits is 201600, while the sum is 42.

The square root of 57249285 is about 7566.3257265333. The cubic root of 57249285 is about 385.4103344208.

The spelling of 57249285 in words is "fifty-seven million, two hundred forty-nine thousand, two hundred eighty-five".