557643340 has 24 divisors (see below), whose sum is σ = 1181999952. Its totient is φ = 220971840.

The previous prime is 557643319. The next prime is 557643343. The reversal of 557643340 is 43346755.

557643340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 557643340.

It is not an unprimeable number, because it can be changed into a prime (557643343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128151 + ... + 132430.

It is an arithmetic number, because the mean of its divisors is an integer number (49249998).

Almost surely, 2^557643340 is an apocalyptic number.

It is an amenable number.

557643340 is an abundant number, since it is smaller than the sum of its proper divisors (624356612).

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

557643340 is a wasteful number, since it uses less digits than its factorization.

557643340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260697 (or 260695 counting only the distinct ones).

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

The square root of 557643340 is about 23614.4731044332. The cubic root of 557643340 is about 823.0991879910.

The spelling of 557643340 in words is "five hundred fifty-seven million, six hundred forty-three thousand, three hundred forty".