557804522909 has 18 divisors (see below), whose sum is σ = 580172400990. Its totient is φ = 535661298480.

The previous prime is 557804522879. The next prime is 557804522939. The reversal of 557804522909 is 909225408755.

It is an interprime number because it is at equal distance from previous prime (557804522879) and next prime (557804522939).

It can be written as a sum of positive squares in only one way, i.e., 480865968025 + 76938554884 = 693445^2 + 277378^2 .

It is not a de Polignac number, because 557804522909 - 2¹² = 557804518813 is a prime.

It is a super-2 number, since 2×557804522909² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557804522939) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1331275502 + ... + 1331275920.

It is an arithmetic number, because the mean of its divisors is an integer number (32231800055).

Almost surely, 2^557804522909 is an apocalyptic number.

It is an amenable number.

557804522909 is a deficient number, since it is larger than the sum of its proper divisors (22367878081).

557804522909 is an frugal number, since it uses more digits than its factorization.

557804522909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 557804522909 in words is "five hundred fifty-seven billion, eight hundred four million, five hundred twenty-two thousand, nine hundred nine".