557442766 has 32 divisors (see below), whose sum is σ = 891425088. Its totient is φ = 260874240.

The previous prime is 557442763. The next prime is 557442773. The reversal of 557442766 is 667244755.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557442763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720756 + ... + 721528.

It is an arithmetic number, because the mean of its divisors is an integer number (27857034).

Almost surely, 2^557442766 is an apocalyptic number.

557442766 is a deficient number, since it is larger than the sum of its proper divisors (333982322).

557442766 is a wasteful number, since it uses less digits than its factorization.

557442766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116.

The product of its digits is 1411200, while the sum is 46.

The square root of 557442766 is about 23610.2258777844. The cubic root of 557442766 is about 823.0004916367. Note that the first 3 decimals are identical.

The spelling of 557442766 in words is "five hundred fifty-seven million, four hundred forty-two thousand, seven hundred sixty-six".