557645544 has 24 divisors (see below), whose sum is σ = 1510290210. Its totient is φ = 185881824.

The previous prime is 557645533. The next prime is 557645549. The reversal of 557645544 is 445546755.

557645544 is a `hidden beast` number, since 557 + 6 + 4 + 55 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 557432100 + 213444 = 23610^2 + 462^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 557645544.

It is not an unprimeable number, because it can be changed into a prime (557645549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3872467 + ... + 3872610.

Almost surely, 2^557645544 is an apocalyptic number.

It is an amenable number.

557645544 is an abundant number, since it is smaller than the sum of its proper divisors (952644666).

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

557645544 is a wasteful number, since it uses less digits than its factorization.

557645544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7745089 (or 7745082 counting only the distinct ones).

The product of its digits is 1680000, while the sum is 45.

The square root of 557645544 is about 23614.5197706835. The cubic root of 557645544 is about 823.1002723808.

The spelling of 557645544 in words is "five hundred fifty-seven million, six hundred forty-five thousand, five hundred forty-four".