557010809 has 2 divisors, whose sum is σ = 557010810. Its totient is φ = 557010808.

The previous prime is 557010793. The next prime is 557010829. The reversal of 557010809 is 908010755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 447745600 + 109265209 = 21160^2 + 10453^2 .

It is a cyclic number.

It is not a de Polignac number, because 557010809 - 2⁴ = 557010793 is a prime.

It is a super-2 number, since 2×557010809² = 620522082685668962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (557010829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278505404 + 278505405.

It is an arithmetic number, because the mean of its divisors is an integer number (278505405).

Almost surely, 2^557010809 is an apocalyptic number.

It is an amenable number.

557010809 is a deficient number, since it is larger than the sum of its proper divisors (1).

557010809 is an equidigital number, since it uses as much as digits as its factorization.

557010809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 557010809 is about 23601.0764373153. The cubic root of 557010809 is about 822.7878583349.

The spelling of 557010809 in words is "five hundred fifty-seven million, ten thousand, eight hundred nine".