557069431 has 2 divisors, whose sum is σ = 557069432. Its totient is φ = 557069430.

The previous prime is 557069393. The next prime is 557069449. The reversal of 557069431 is 134960755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 557069431 - 2²³ = 548680823 is a prime.

It is a super-2 number, since 2×557069431² = 620652701909327522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557069831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278534715 + 278534716.

It is an arithmetic number, because the mean of its divisors is an integer number (278534716).

Almost surely, 2^557069431 is an apocalyptic number.

557069431 is a deficient number, since it is larger than the sum of its proper divisors (1).

557069431 is an equidigital number, since it uses as much as digits as its factorization.

557069431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 557069431 is about 23602.3183395191. The cubic root of 557069431 is about 822.8167217951.

The spelling of 557069431 in words is "five hundred fifty-seven million, sixty-nine thousand, four hundred thirty-one".