57368821 has 4 divisors (see below), whose sum is σ = 57820672. Its totient is φ = 56916972.

The previous prime is 57368797. The next prime is 57368867. The reversal of 57368821 is 12886375.

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 not a de Polignac number, because 57368821 - 2⁵ = 57368789 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 (57368891) 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, 225735 + ... + 225988.

It is an arithmetic number, because the mean of its divisors is an integer number (14455168).

Almost surely, 2^57368821 is an apocalyptic number.

It is an amenable number.

57368821 is a deficient number, since it is larger than the sum of its proper divisors (451851).

57368821 is a wasteful number, since it uses less digits than its factorization.

57368821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451850.

The product of its digits is 80640, while the sum is 40.

The square root of 57368821 is about 7574.2208180116. The cubic root of 57368821 is about 385.6783923945.

The spelling of 57368821 in words is "fifty-seven million, three hundred sixty-eight thousand, eight hundred twenty-one".