557772431 has 4 divisors (see below), whose sum is σ = 590582592. Its totient is φ = 524962272.

The previous prime is 557772421. The next prime is 557772433. The reversal of 557772431 is 134277755.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557772431 is a prime.

It is a super-2 number, since 2×557772431² = 622220169567299522, 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 (557772433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16405055 + ... + 16405088.

It is an arithmetic number, because the mean of its divisors is an integer number (147645648).

Almost surely, 2^557772431 is an apocalyptic number.

557772431 is a deficient number, since it is larger than the sum of its proper divisors (32810161).

557772431 is a wasteful number, since it uses less digits than its factorization.

557772431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32810160.

The product of its digits is 205800, while the sum is 41.

The square root of 557772431 is about 23617.2062488348. The cubic root of 557772431 is about 823.1626972221.

It can be divided in two parts, 5577724 and 31, that added together give a palindrome (5577755).

The spelling of 557772431 in words is "five hundred fifty-seven million, seven hundred seventy-two thousand, four hundred thirty-one".