557712220 has 24 divisors (see below), whose sum is σ = 1261288224. Its totient is φ = 205924416.

The previous prime is 557712179. The next prime is 557712241. The reversal of 557712220 is 22217755.

It is a super-2 number, since 2×557712220² = 622085840674656800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1072264 + ... + 1072783.

It is an arithmetic number, because the mean of its divisors is an integer number (52553676).

Almost surely, 2^557712220 is an apocalyptic number.

It is an amenable number.

557712220 is an abundant number, since it is smaller than the sum of its proper divisors (703576004).

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

557712220 is a wasteful number, since it uses less digits than its factorization.

557712220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145069 (or 2145067 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 557712220 is about 23615.9314870280. The cubic root of 557712220 is about 823.1330762812.

Adding to 557712220 its reverse (22217755), we get a palindrome (579929975).

The spelling of 557712220 in words is "five hundred fifty-seven million, seven hundred twelve thousand, two hundred twenty".