557797481 has 4 divisors (see below), whose sum is σ = 566941764. Its totient is φ = 548653200.

The previous prime is 557797451. The next prime is 557797507. The reversal of 557797481 is 184797755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 284225881 + 273571600 = 16859^2 + 16540^2 .

It is a cyclic number.

It is not a de Polignac number, because 557797481 - 2²⁶ = 490688617 is a prime.

It is a super-2 number, since 2×557797481² = 622276059619890722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557797411) 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, 4572050 + ... + 4572171.

It is an arithmetic number, because the mean of its divisors is an integer number (141735441).

Almost surely, 2^557797481 is an apocalyptic number.

It is an amenable number.

557797481 is a deficient number, since it is larger than the sum of its proper divisors (9144283).

557797481 is an equidigital number, since it uses as much as digits as its factorization.

557797481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9144282.

The product of its digits is 2469600, while the sum is 53.

The square root of 557797481 is about 23617.7365765647. The cubic root of 557797481 is about 823.1750199997.

The spelling of 557797481 in words is "five hundred fifty-seven million, seven hundred ninety-seven thousand, four hundred eighty-one".