557731157 has 2 divisors, whose sum is σ = 557731158. Its totient is φ = 557731156.

The previous prime is 557731133. The next prime is 557731171. The reversal of 557731157 is 751137755.

557731157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540748516 + 16982641 = 23254^2 + 4121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557731157 is a prime.

It is a super-2 number, since 2×557731157² = 622128086977117298, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557734157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278865578 + 278865579.

It is an arithmetic number, because the mean of its divisors is an integer number (278865579).

Almost surely, 2^557731157 is an apocalyptic number.

It is an amenable number.

557731157 is a deficient number, since it is larger than the sum of its proper divisors (1).

557731157 is an equidigital number, since it uses as much as digits as its factorization.

557731157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128625, while the sum is 41.

The square root of 557731157 is about 23616.3324205940. The cubic root of 557731157 is about 823.1423926120.

The spelling of 557731157 in words is "five hundred fifty-seven million, seven hundred thirty-one thousand, one hundred fifty-seven".