57102216 has 16 divisors (see below), whose sum is σ = 142755600. Its totient is φ = 19034064.

The previous prime is 57102193. The next prime is 57102229. The reversal of 57102216 is 61220175.

It is a super-2 number, since 2×57102216² = 6521326144221312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2379259 = 57102216 / (5 + 7 + 1 + 0 + 2 + 2 + 1 + 6).

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, 1189606 + ... + 1189653.

It is an arithmetic number, because the mean of its divisors is an integer number (8922225).

Almost surely, 2^57102216 is an apocalyptic number.

It is an amenable number.

57102216 is an abundant number, since it is smaller than the sum of its proper divisors (85653384).

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

57102216 is a wasteful number, since it uses less digits than its factorization.

57102216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379268 (or 2379264 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 57102216 is about 7556.6008231215. The cubic root of 57102216 is about 385.0800215967.

The spelling of 57102216 in words is "fifty-seven million, one hundred two thousand, two hundred sixteen".