57505939 has 2 divisors, whose sum is σ = 57505940. Its totient is φ = 57505938.

The previous prime is 57505933. The next prime is 57505967. The reversal of 57505939 is 93950575.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57505939 - 2¹³ = 57497747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57505895 and 57505904.

It is not a weakly prime, because it can be changed into another prime (57505933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28752969 + 28752970.

It is an arithmetic number, because the mean of its divisors is an integer number (28752970).

Almost surely, 2^57505939 is an apocalyptic number.

57505939 is a deficient number, since it is larger than the sum of its proper divisors (1).

57505939 is an equidigital number, since it uses as much as digits as its factorization.

57505939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 212625, while the sum is 43.

The square root of 57505939 is about 7583.2670400033. The cubic root of 57505939 is about 385.9854196395.

The spelling of 57505939 in words is "fifty-seven million, five hundred five thousand, nine hundred thirty-nine".