1157566957 has 2 divisors, whose sum is σ = 1157566958. Its totient is φ = 1157566956.

The previous prime is 1157566951. The next prime is 1157566967. The reversal of 1157566957 is 7596657511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1140683076 + 16883881 = 33774^2 + 4109^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157566957 - 2¹¹ = 1157564909 is a prime.

It is a super-2 number, since 2×1157566957² = 2679922519876479698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157566951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578783478 + 578783479.

It is an arithmetic number, because the mean of its divisors is an integer number (578783479).

Almost surely, 2^1157566957 is an apocalyptic number.

It is an amenable number.

1157566957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157566957 is an equidigital number, since it uses as much as digits as its factorization.

1157566957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1984500, while the sum is 52.

The square root of 1157566957 is about 34023.0356817260. The cubic root of 1157566957 is about 1049.9824508027.

The spelling of 1157566957 in words is "one billion, one hundred fifty-seven million, five hundred sixty-six thousand, nine hundred fifty-seven".