57608821 has 4 divisors (see below), whose sum is σ = 57953952. Its totient is φ = 57263692.

The previous prime is 57608809. The next prime is 57608879. The reversal of 57608821 is 12880675.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57608821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57608891) 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, 172315 + ... + 172648.

It is an arithmetic number, because the mean of its divisors is an integer number (14488488).

Almost surely, 2^57608821 is an apocalyptic number.

It is an amenable number.

57608821 is a deficient number, since it is larger than the sum of its proper divisors (345131).

57608821 is a wasteful number, since it uses less digits than its factorization.

57608821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345130.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 57608821 is about 7590.0474965576. The cubic root of 57608821 is about 386.2154671458.

The spelling of 57608821 in words is "fifty-seven million, six hundred eight thousand, eight hundred twenty-one".