557668226 has 8 divisors (see below), whose sum is σ = 852285564. Its totient is φ = 273573040.

The previous prime is 557668213. The next prime is 557668249. The reversal of 557668226 is 622866755.

It is a Cunningham number, because it is equal to 23615²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 557668225 + 1 = 23615^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2630405 + ... + 2630616.

Almost surely, 2^557668226 is an apocalyptic number.

557668226 is a deficient number, since it is larger than the sum of its proper divisors (294617338).

557668226 is a wasteful number, since it uses less digits than its factorization.

557668226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261076.

The product of its digits is 1209600, while the sum is 47.

The square root of 557668226 is about 23615.0000211730. Note that the first 4 decimals coincide. The cubic root of 557668226 is about 823.1114319830. Note that the first 3 decimals are identical.

The spelling of 557668226 in words is "five hundred fifty-seven million, six hundred sixty-eight thousand, two hundred twenty-six".