57152509 has 2 divisors, whose sum is σ = 57152510. Its totient is φ = 57152508.

The previous prime is 57152489. The next prime is 57152573. The reversal of 57152509 is 90525175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52157284 + 4995225 = 7222^2 + 2235^2 .

It is a cyclic number.

It is not a de Polignac number, because 57152509 - 2⁵ = 57152477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57152609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28576254 + 28576255.

It is an arithmetic number, because the mean of its divisors is an integer number (28576255).

Almost surely, 2^57152509 is an apocalyptic number.

It is an amenable number.

57152509 is a deficient number, since it is larger than the sum of its proper divisors (1).

57152509 is an equidigital number, since it uses as much as digits as its factorization.

57152509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 57152509 is about 7559.9278435710. The cubic root of 57152509 is about 385.1930420003.

The spelling of 57152509 in words is "fifty-seven million, one hundred fifty-two thousand, five hundred nine".