57557513 has 6 divisors (see below), whose sum is σ = 62325774. Its totient is φ = 53129856.

The previous prime is 57557503. The next prime is 57557519. The reversal of 57557513 is 31575575.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7246864 + 50310649 = 2692^2 + 7093^2 .

It is not a de Polignac number, because 57557513 - 2⁶ = 57557449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57557519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170120 + ... + 170457.

It is an arithmetic number, because the mean of its divisors is an integer number (10387629).

Almost surely, 2^57557513 is an apocalyptic number.

It is an amenable number.

57557513 is a deficient number, since it is larger than the sum of its proper divisors (4768261).

57557513 is a wasteful number, since it uses less digits than its factorization.

57557513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340603 (or 340590 counting only the distinct ones).

The product of its digits is 91875, while the sum is 38.

The square root of 57557513 is about 7586.6667911541. Note that the first 3 decimals coincide. The cubic root of 57557513 is about 386.1007750516.

The spelling of 57557513 in words is "fifty-seven million, five hundred fifty-seven thousand, five hundred thirteen".