557215964 has 12 divisors (see below), whose sum is σ = 1026450600. Its totient is φ = 263944368.

The previous prime is 557215961. The next prime is 557215999. The reversal of 557215964 is 469512755.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557215961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665819 + ... + 3665970.

It is an arithmetic number, because the mean of its divisors is an integer number (85537550).

Almost surely, 2^557215964 is an apocalyptic number.

It is an amenable number.

557215964 is a deficient number, since it is larger than the sum of its proper divisors (469234636).

557215964 is a wasteful number, since it uses less digits than its factorization.

557215964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331812 (or 7331810 counting only the distinct ones).

The product of its digits is 378000, while the sum is 44.

The square root of 557215964 is about 23605.4223431821. The cubic root of 557215964 is about 822.8888607577. Note that the first 4 decimals are identical.

The spelling of 557215964 in words is "five hundred fifty-seven million, two hundred fifteen thousand, nine hundred sixty-four".