557994631 has 4 divisors (see below), whose sum is σ = 562254264. Its totient is φ = 553735000.

The previous prime is 557994629. The next prime is 557994643. The reversal of 557994631 is 136499755.

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

It is a cyclic number.

It is not a de Polignac number, because 557994631 - 2¹ = 557994629 is a prime.

It is a super-2 number, since 2×557994631² = 622716016449652322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557994601) 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 3 ways as a sum of consecutive naturals, for example, 2129620 + ... + 2129881.

It is an arithmetic number, because the mean of its divisors is an integer number (140563566).

Almost surely, 2^557994631 is an apocalyptic number.

557994631 is a deficient number, since it is larger than the sum of its proper divisors (4259633).

557994631 is a wasteful number, since it uses less digits than its factorization.

557994631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259632.

The product of its digits is 1020600, while the sum is 49.

The square root of 557994631 is about 23621.9099778151. The cubic root of 557994631 is about 823.2719905816.

The spelling of 557994631 in words is "five hundred fifty-seven million, nine hundred ninety-four thousand, six hundred thirty-one".