57015139 has 2 divisors, whose sum is σ = 57015140. Its totient is φ = 57015138.

The previous prime is 57015109. The next prime is 57015157. The reversal of 57015139 is 93151075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57015139 - 2⁹ = 57014627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57015139.

It is not a weakly prime, because it can be changed into another prime (57015109) 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, 28507569 + 28507570.

It is an arithmetic number, because the mean of its divisors is an integer number (28507570).

Almost surely, 2^57015139 is an apocalyptic number.

57015139 is a deficient number, since it is larger than the sum of its proper divisors (1).

57015139 is an equidigital number, since it uses as much as digits as its factorization.

57015139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 57015139 is about 7550.8369734752. The cubic root of 57015139 is about 384.8841817249.

The spelling of 57015139 in words is "fifty-seven million, fifteen thousand, one hundred thirty-nine".