57214720 has 36 divisors (see below), whose sum is σ = 137050200. Its totient is φ = 22885376.

The previous prime is 57214693. The next prime is 57214727. The reversal of 57214720 is 2741275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57214727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21070 + ... + 23629.

It is an arithmetic number, because the mean of its divisors is an integer number (3806950).

Almost surely, 2^57214720 is an apocalyptic number.

It is an amenable number.

57214720 is an abundant number, since it is smaller than the sum of its proper divisors (79835480).

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

57214720 is an equidigital number, since it uses as much as digits as its factorization.

57214720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44720 (or 44706 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 57214720 is about 7564.0412479045. The cubic root of 57214720 is about 385.3327533053.

Adding to 57214720 its reverse (2741275), we get a palindrome (59955995).

The spelling of 57214720 in words is "fifty-seven million, two hundred fourteen thousand, seven hundred twenty".