57409619 has 2 divisors, whose sum is σ = 57409620. Its totient is φ = 57409618.

The previous prime is 57409579. The next prime is 57409643. The reversal of 57409619 is 91690475.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57409619 is a prime.

It is a super-2 number, since 2×57409619² = 6591728707450322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57409669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28704809 + 28704810.

It is an arithmetic number, because the mean of its divisors is an integer number (28704810).

Almost surely, 2^57409619 is an apocalyptic number.

57409619 is a deficient number, since it is larger than the sum of its proper divisors (1).

57409619 is an equidigital number, since it uses as much as digits as its factorization.

57409619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 57409619 is about 7576.9135536840. The cubic root of 57409619 is about 385.7697961587.

The spelling of 57409619 in words is "fifty-seven million, four hundred nine thousand, six hundred nineteen".