57328621 has 8 divisors (see below), whose sum is σ = 67777920. Its totient is φ = 47444208.

The previous prime is 57328597. The next prime is 57328631. The reversal of 57328621 is 12682375.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57328621 - 2¹¹ = 57326573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57328631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141001 + ... + 141406.

It is an arithmetic number, because the mean of its divisors is an integer number (8472240).

Almost surely, 2^57328621 is an apocalyptic number.

It is an amenable number.

57328621 is a deficient number, since it is larger than the sum of its proper divisors (10449299).

57328621 is a wasteful number, since it uses less digits than its factorization.

57328621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282443.

The product of its digits is 20160, while the sum is 34.

The square root of 57328621 is about 7571.5666146446. The cubic root of 57328621 is about 385.5882859921.

The spelling of 57328621 in words is "fifty-seven million, three hundred twenty-eight thousand, six hundred twenty-one".