557218233 has 24 divisors (see below), whose sum is σ = 945584640. Its totient is φ = 311729760.

The previous prime is 557218219. The next prime is 557218241. The reversal of 557218233 is 332812755.

It is a happy number.

557218233 is a `hidden beast` number, since 5 + 572 + 1 + 82 + 3 + 3 = 666.

It is not a de Polignac number, because 557218233 - 2¹⁰ = 557217209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (557218283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215193 + ... + 217766.

It is an arithmetic number, because the mean of its divisors is an integer number (39399360).

Almost surely, 2^557218233 is an apocalyptic number.

It is an amenable number.

557218233 is a deficient number, since it is larger than the sum of its proper divisors (388366407).

557218233 is a wasteful number, since it uses less digits than its factorization.

557218233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432989 (or 432986 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 557218233 is about 23605.4704041245. The cubic root of 557218233 is about 822.8899776988.

The spelling of 557218233 in words is "five hundred fifty-seven million, two hundred eighteen thousand, two hundred thirty-three".