57204919 has 2 divisors, whose sum is σ = 57204920. Its totient is φ = 57204918.

The previous prime is 57204893. The next prime is 57204941. The reversal of 57204919 is 91940275.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57204919 is a prime.

It is a super-2 number, since 2×57204919² = 6544805515593122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57204989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28602459 + 28602460.

It is an arithmetic number, because the mean of its divisors is an integer number (28602460).

Almost surely, 2^57204919 is an apocalyptic number.

57204919 is a deficient number, since it is larger than the sum of its proper divisors (1).

57204919 is an equidigital number, since it uses as much as digits as its factorization.

57204919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 57204919 is about 7563.3933521932. The cubic root of 57204919 is about 385.3107492827.

The spelling of 57204919 in words is "fifty-seven million, two hundred four thousand, nine hundred nineteen".