57539155 has 4 divisors (see below), whose sum is σ = 69046992. Its totient is φ = 46031320.

The previous prime is 57539149. The next prime is 57539159. The reversal of 57539155 is 55193575.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57539155 - 2³ = 57539147 is a prime.

It is a super-2 number, since 2×57539155² = 6621508716228050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57539159) 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 in 3 ways as a sum of consecutive naturals, for example, 5753911 + ... + 5753920.

It is an arithmetic number, because the mean of its divisors is an integer number (17261748).

Almost surely, 2^57539155 is an apocalyptic number.

57539155 is a deficient number, since it is larger than the sum of its proper divisors (11507837).

57539155 is a wasteful number, since it uses less digits than its factorization.

57539155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11507836.

The product of its digits is 118125, while the sum is 40.

The square root of 57539155 is about 7585.4568089206. The cubic root of 57539155 is about 386.0597216694.

The spelling of 57539155 in words is "fifty-seven million, five hundred thirty-nine thousand, one hundred fifty-five".