556479730531 has 4 divisors (see below), whose sum is σ = 557381643192. Its totient is φ = 555577817872.

The previous prime is 556479730489. The next prime is 556479730559. The reversal of 556479730531 is 135037974655.

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 556479730531 - 2⁷ = 556479730403 is a prime.

It is a super-2 number, since 2×556479730531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556479730571) 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, 450955405 + ... + 450956638.

It is an arithmetic number, because the mean of its divisors is an integer number (139345410798).

Almost surely, 2^556479730531 is an apocalyptic number.

556479730531 is a deficient number, since it is larger than the sum of its proper divisors (901912661).

556479730531 is an equidigital number, since it uses as much as digits as its factorization.

556479730531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901912660.

The product of its (nonzero) digits is 11907000, while the sum is 55.

The spelling of 556479730531 in words is "five hundred fifty-six billion, four hundred seventy-nine million, seven hundred thirty thousand, five hundred thirty-one".