557506513 has 4 divisors (see below), whose sum is σ = 560729268. Its totient is φ = 554283760.

The previous prime is 557506507. The next prime is 557506549. The reversal of 557506513 is 315605755.

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

It can be written as a sum of positive squares in 2 ways, for example, as 341769169 + 215737344 = 18487^2 + 14688^2 .

It is a cyclic number.

It is not a de Polignac number, because 557506513 - 2¹³ = 557498321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557506583) 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, 1611118 + ... + 1611463.

It is an arithmetic number, because the mean of its divisors is an integer number (140182317).

Almost surely, 2^557506513 is an apocalyptic number.

It is an amenable number.

557506513 is a deficient number, since it is larger than the sum of its proper divisors (3222755).

557506513 is a wasteful number, since it uses less digits than its factorization.

557506513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222754.

The product of its (nonzero) digits is 78750, while the sum is 37.

The square root of 557506513 is about 23611.5758262764. The cubic root of 557506513 is about 823.0318621593.

The spelling of 557506513 in words is "five hundred fifty-seven million, five hundred six thousand, five hundred thirteen".