556575431 has 2 divisors, whose sum is σ = 556575432. Its totient is φ = 556575430.

The previous prime is 556575421. The next prime is 556575463. The reversal of 556575431 is 134575655.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556575431 is a prime.

It is a super-2 number, since 2×556575431² = 619552420785671522, which contains 22 as substring.

It is equal to p_29172299 and since 556575431 and 29172299 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556575401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278287715 + 278287716.

It is an arithmetic number, because the mean of its divisors is an integer number (278287716).

Almost surely, 2^556575431 is an apocalyptic number.

556575431 is a deficient number, since it is larger than the sum of its proper divisors (1).

556575431 is an equidigital number, since it uses as much as digits as its factorization.

556575431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 41.

The square root of 556575431 is about 23591.8509447648. The cubic root of 556575431 is about 822.5734297577.

The spelling of 556575431 in words is "five hundred fifty-six million, five hundred seventy-five thousand, four hundred thirty-one".