557233940 has 24 divisors (see below), whose sum is σ = 1172315592. Its totient is φ = 222488960.

The previous prime is 557233933. The next prime is 557233951. The reversal of 557233940 is 49332755.

It can be written as a sum of positive squares in 4 ways, for example, as 17322244 + 539911696 = 4162^2 + 23236^2 .

It is a junction number, because it is equal to n+sod(n) for n = 557233894 and 557233903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13871 + ... + 36150.

It is an arithmetic number, because the mean of its divisors is an integer number (48846483).

Almost surely, 2^557233940 is an apocalyptic number.

It is an amenable number.

557233940 is an abundant number, since it is smaller than the sum of its proper divisors (615081652).

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

557233940 is a wasteful number, since it uses less digits than its factorization.

557233940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50587 (or 50585 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 557233940 is about 23605.8031000854. The cubic root of 557233940 is about 822.8977095656.

The spelling of 557233940 in words is "five hundred fifty-seven million, two hundred thirty-three thousand, nine hundred forty".