557243236 has 81 divisors (see below), whose sum is σ = 1140937707. Its totient is φ = 237948480.

The previous prime is 557243231. The next prime is 557243243. The reversal of 557243236 is 632342755.

557243236 = T₃₁₁₃ + T₃₁₁₄ + ... + T₃₂₂₃.

The square root of 557243236 is 23606.

It is a perfect power (a square), and thus also a powerful number.

557243236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 118592100 + 438651136 = 10890^2 + 20944^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 557243195 and 557243204.

It is not an unprimeable number, because it can be changed into a prime (557243231) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15060610 + ... + 15060646.

Almost surely, 2^557243236 is an apocalyptic number.

557243236 is the 23606-th square number.

It is an amenable number.

557243236 is an abundant number, since it is smaller than the sum of its proper divisors (583694471).

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

557243236 is a wasteful number, since it uses less digits than its factorization.

557243236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 79 counting only the distinct ones).

The product of its digits is 151200, while the sum is 37.

The cubic root of 557243236 is about 822.9022855100.

The spelling of 557243236 in words is "five hundred fifty-seven million, two hundred forty-three thousand, two hundred thirty-six".