557621746 has 16 divisors (see below), whose sum is σ = 937134720. Its totient is φ = 246613680.

The previous prime is 557621741. The next prime is 557621749. The reversal of 557621746 is 647126755.

It is a super-2 number, since 2×557621746² = 621884023224177032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557621741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341706 + ... + 343333.

It is an arithmetic number, because the mean of its divisors is an integer number (58570920).

Almost surely, 2^557621746 is an apocalyptic number.

557621746 is a deficient number, since it is larger than the sum of its proper divisors (379512974).

557621746 is a wasteful number, since it uses less digits than its factorization.

557621746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685089.

The product of its digits is 352800, while the sum is 43.

The square root of 557621746 is about 23614.0158804046. The cubic root of 557621746 is about 823.0885633785.

The spelling of 557621746 in words is "five hundred fifty-seven million, six hundred twenty-one thousand, seven hundred forty-six".