57919919 has 2 divisors, whose sum is σ = 57919920. Its totient is φ = 57919918.

The previous prime is 57919913. The next prime is 57919949. The reversal of 57919919 is 91991975.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57919919 is a prime.

It is a super-2 number, since 2×57919919² = 6709434033933122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57919913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28959959 + 28959960.

It is an arithmetic number, because the mean of its divisors is an integer number (28959960).

Almost surely, 2^57919919 is an apocalyptic number.

57919919 is a deficient number, since it is larger than the sum of its proper divisors (1).

57919919 is an equidigital number, since it uses as much as digits as its factorization.

57919919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 50.

The square root of 57919919 is about 7610.5137145925. The cubic root of 57919919 is about 386.9094304724.

The spelling of 57919919 in words is "fifty-seven million, nine hundred nineteen thousand, nine hundred nineteen".