557894737 has 4 divisors (see below), whose sum is σ = 567350640. Its totient is φ = 548438836.

The previous prime is 557894731. The next prime is 557894759. The reversal of 557894737 is 737498755.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557894737 is a prime.

It is a super-2 number, since 2×557894737² = 622493075144598338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557894731) 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, 4727863 + ... + 4727980.

It is an arithmetic number, because the mean of its divisors is an integer number (141837660).

Almost surely, 2^557894737 is an apocalyptic number.

It is an amenable number.

557894737 is a deficient number, since it is larger than the sum of its proper divisors (9455903).

557894737 is an equidigital number, since it uses as much as digits as its factorization.

557894737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9455902.

The product of its digits is 7408800, while the sum is 55.

The square root of 557894737 is about 23619.7954478865. The cubic root of 557894737 is about 823.2228593799. Note that the first 3 decimals are identical.

The spelling of 557894737 in words is "five hundred fifty-seven million, eight hundred ninety-four thousand, seven hundred thirty-seven".