57217472 has 28 divisors (see below), whose sum is σ = 122276616. Its totient is φ = 26407680.

The previous prime is 57217463. The next prime is 57217483. The reversal of 57217472 is 27471275.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 33554 + ... + 35217.

It is an arithmetic number, because the mean of its divisors is an integer number (4367022).

Almost surely, 2^57217472 is an apocalyptic number.

57217472 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57217472 is an abundant number, since it is smaller than the sum of its proper divisors (65059144).

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

57217472 is a wasteful number, since it uses less digits than its factorization.

57217472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68796 (or 68786 counting only the distinct ones).

The product of its digits is 27440, while the sum is 35.

The square root of 57217472 is about 7564.2231590561. The cubic root of 57217472 is about 385.3389313118.

The spelling of 57217472 in words is "fifty-seven million, two hundred seventeen thousand, four hundred seventy-two".