557881481 has 2 divisors, whose sum is σ = 557881482. Its totient is φ = 557881480.

The previous prime is 557881433. The next prime is 557881483. The reversal of 557881481 is 184188755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285103225 + 272778256 = 16885^2 + 16516^2 .

It is a cyclic number.

It is not a de Polignac number, because 557881481 - 2¹⁰ = 557880457 is a prime.

It is a super-2 number, since 2×557881481² = 622463493685506722, which contains 22 as substring.

Together with 557881483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (557881483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278940740 + 278940741.

It is an arithmetic number, because the mean of its divisors is an integer number (278940741).

Almost surely, 2^557881481 is an apocalyptic number.

It is an amenable number.

557881481 is a deficient number, since it is larger than the sum of its proper divisors (1).

557881481 is an equidigital number, since it uses as much as digits as its factorization.

557881481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358400, while the sum is 47.

The square root of 557881481 is about 23619.5148341366. The cubic root of 557881481 is about 823.2163391961.

The spelling of 557881481 in words is "five hundred fifty-seven million, eight hundred eighty-one thousand, four hundred eighty-one".