557921640 has 128 divisors (see below), whose sum is σ = 1783192320. Its totient is φ = 139161600.

The previous prime is 557921597. The next prime is 557921653. The reversal of 557921640 is 46129755.

It is a super-2 number, since 2×557921640² = 622553112760579200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368485 + ... + 369995.

It is an arithmetic number, because the mean of its divisors is an integer number (13931190).

Almost surely, 2^557921640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557921640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891596160).

557921640 is an abundant number, since it is smaller than the sum of its proper divisors (1225270680).

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

557921640 is a wasteful number, since it uses less digits than its factorization.

557921640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 557921640 is about 23620.3649421426. The cubic root of 557921640 is about 823.2360917498.

The spelling of 557921640 in words is "five hundred fifty-seven million, nine hundred twenty-one thousand, six hundred forty".