57477839 has 2 divisors, whose sum is σ = 57477840. Its totient is φ = 57477838.

The previous prime is 57477809. The next prime is 57477853. The reversal of 57477839 is 93877475.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57477839 - 2¹² = 57473743 is a prime.

It is a super-2 number, since 2×57477839² = 6607403952219842, 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 (57477809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28738919 + 28738920.

It is an arithmetic number, because the mean of its divisors is an integer number (28738920).

Almost surely, 2^57477839 is an apocalyptic number.

57477839 is a deficient number, since it is larger than the sum of its proper divisors (1).

57477839 is an equidigital number, since it uses as much as digits as its factorization.

57477839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 50.

The square root of 57477839 is about 7581.4140501624. The cubic root of 57477839 is about 385.9225394246.

The spelling of 57477839 in words is "fifty-seven million, four hundred seventy-seven thousand, eight hundred thirty-nine".