57520819 has 2 divisors, whose sum is σ = 57520820. Its totient is φ = 57520818.

The previous prime is 57520807. The next prime is 57520867. The reversal of 57520819 is 91802575.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57520819 - 2⁵ = 57520787 is a prime.

It is a super-2 number, since 2×57520819² = 6617289236861522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57520889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28760409 + 28760410.

It is an arithmetic number, because the mean of its divisors is an integer number (28760410).

Almost surely, 2^57520819 is an apocalyptic number.

57520819 is a deficient number, since it is larger than the sum of its proper divisors (1).

57520819 is an equidigital number, since it uses as much as digits as its factorization.

57520819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 57520819 is about 7584.2480840226. The cubic root of 57520819 is about 386.0187087677.

The spelling of 57520819 in words is "fifty-seven million, five hundred twenty thousand, eight hundred nineteen".