557163157 has 4 divisors (see below), whose sum is σ = 557211340. Its totient is φ = 557114976.

The previous prime is 557163149. The next prime is 557163161. The reversal of 557163157 is 751361755.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 497780721 + 59382436 = 22311^2 + 7706^2 .

It is a 3-Lehmer number, since φ(557163157) divides (557163157-1)³.

It is a cyclic number.

It is not a de Polignac number, because 557163157 - 2³ = 557163149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557163127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4819 + ... + 33727.

It is an arithmetic number, because the mean of its divisors is an integer number (139302835).

Almost surely, 2^557163157 is an apocalyptic number.

557163157 is the 19273-rd pentagonal number.

It is an amenable number.

557163157 is a deficient number, since it is larger than the sum of its proper divisors (48183).

557163157 is a wasteful number, since it uses less digits than its factorization.

557163157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48182.

The product of its digits is 110250, while the sum is 40.

The square root of 557163157 is about 23604.3037813023. The cubic root of 557163157 is about 822.8628650531.

The spelling of 557163157 in words is "five hundred fifty-seven million, one hundred sixty-three thousand, one hundred fifty-seven".