557643498 has 16 divisors (see below), whose sum is σ = 1115754816. Its totient is φ = 185803200.

The previous prime is 557643491. The next prime is 557643547. The reversal of 557643498 is 894346755.

It is a self number, because there is not a number n which added to its sum of digits gives 557643498.

It is not an unprimeable number, because it can be changed into a prime (557643491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2911 + ... + 33522.

It is an arithmetic number, because the mean of its divisors is an integer number (69734676).

Almost surely, 2^557643498 is an apocalyptic number.

557643498 is an abundant number, since it is smaller than the sum of its proper divisors (558111318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557643498 is a wasteful number, since it uses less digits than its factorization.

557643498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38989.

The product of its digits is 3628800, while the sum is 51.

The square root of 557643498 is about 23614.4764498390. The cubic root of 557643498 is about 823.0992657287.

The spelling of 557643498 in words is "five hundred fifty-seven million, six hundred forty-three thousand, four hundred ninety-eight".