557742757 has 12 divisors (see below), whose sum is σ = 658852704. Its totient is φ = 468034320.

The previous prime is 557742719. The next prime is 557742763. The reversal of 557742757 is 757247755.

It is a happy number.

It is not a de Polignac number, because 557742757 - 2⁷ = 557742629 is a prime.

It is a super-2 number, since 2×557742757² = 622153965971922098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 557742757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557742707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148153 + ... + 151870.

It is an arithmetic number, because the mean of its divisors is an integer number (54904392).

Almost surely, 2^557742757 is an apocalyptic number.

It is an amenable number.

557742757 is a deficient number, since it is larger than the sum of its proper divisors (101109947).

557742757 is a wasteful number, since it uses less digits than its factorization.

557742757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300060 (or 300047 counting only the distinct ones).

The product of its digits is 2401000, while the sum is 49.

The square root of 557742757 is about 23616.5780120660. The cubic root of 557742757 is about 823.1480992955.

The spelling of 557742757 in words is "five hundred fifty-seven million, seven hundred forty-two thousand, seven hundred fifty-seven".