557506506 has 8 divisors (see below), whose sum is σ = 1115013024. Its totient is φ = 185835500.

The previous prime is 557506501. The next prime is 557506507. The reversal of 557506506 is 605605755.

It is a sphenic number, since it is the product of 3 distinct primes.

557506506 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (557506501) 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, 46458870 + ... + 46458881.

It is an arithmetic number, because the mean of its divisors is an integer number (139376628).

Almost surely, 2^557506506 is an apocalyptic number.

557506506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557506506 is a wasteful number, since it uses less digits than its factorization.

557506506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92917756.

The product of its (nonzero) digits is 157500, while the sum is 39.

The square root of 557506506 is about 23611.5756780440. The cubic root of 557506506 is about 823.0318587146.

The spelling of 557506506 in words is "five hundred fifty-seven million, five hundred six thousand, five hundred six".