556126631 has 2 divisors, whose sum is σ = 556126632. Its totient is φ = 556126630.

The previous prime is 556126601. The next prime is 556126651. The reversal of 556126631 is 136621655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556126631 - 2⁶ = 556126567 is a prime.

It is a super-2 number, since 2×556126631² = 618553659414820322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 556126591 and 556126600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556126601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278063315 + 278063316.

It is an arithmetic number, because the mean of its divisors is an integer number (278063316).

Almost surely, 2^556126631 is an apocalyptic number.

556126631 is a deficient number, since it is larger than the sum of its proper divisors (1).

556126631 is an equidigital number, since it uses as much as digits as its factorization.

556126631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 556126631 is about 23582.3372675399. The cubic root of 556126631 is about 822.3522736140.

The spelling of 556126631 in words is "five hundred fifty-six million, one hundred twenty-six thousand, six hundred thirty-one".