557520689 has 6 divisors (see below), whose sum is σ = 612812130. Its totient is φ = 506836880.

The previous prime is 557520581. The next prime is 557520697. The reversal of 557520689 is 986025755.

It can be written as a sum of positive squares in only one way, i.e., 302064400 + 255456289 = 17380^2 + 15983^2 .

It is not a de Polignac number, because 557520689 - 2⁸ = 557520433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (557520889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2303684 + ... + 2303925.

It is an arithmetic number, because the mean of its divisors is an integer number (102135355).

Almost surely, 2^557520689 is an apocalyptic number.

It is an amenable number.

557520689 is a deficient number, since it is larger than the sum of its proper divisors (55291441).

557520689 is a wasteful number, since it uses less digits than its factorization.

557520689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607631 (or 4607620 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 47.

The square root of 557520689 is about 23611.8760161068. The cubic root of 557520689 is about 823.0388379826.

The spelling of 557520689 in words is "five hundred fifty-seven million, five hundred twenty thousand, six hundred eighty-nine".