57115559 has 2 divisors, whose sum is σ = 57115560. Its totient is φ = 57115558.

The previous prime is 57115549. The next prime is 57115571. The reversal of 57115559 is 95551175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57115559 - 2⁴ = 57115543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57115519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28557779 + 28557780.

It is an arithmetic number, because the mean of its divisors is an integer number (28557780).

Almost surely, 2^57115559 is an apocalyptic number.

57115559 is a deficient number, since it is larger than the sum of its proper divisors (1).

57115559 is an equidigital number, since it uses as much as digits as its factorization.

57115559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39375, while the sum is 38.

The square root of 57115559 is about 7557.4836420597. The cubic root of 57115559 is about 385.1100129755.

The spelling of 57115559 in words is "fifty-seven million, one hundred fifteen thousand, five hundred fifty-nine".