1157595457 has 2 divisors, whose sum is σ = 1157595458. Its totient is φ = 1157595456.

The previous prime is 1157595421. The next prime is 1157595469. The reversal of 1157595457 is 7545957511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1150498561 + 7096896 = 33919^2 + 2664^2 .

It is an emirp because it is prime and its reverse (7545957511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157595457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1157595457.

It is not a weakly prime, because it can be changed into another prime (1157595157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578797728 + 578797729.

It is an arithmetic number, because the mean of its divisors is an integer number (578797729).

Almost surely, 2^1157595457 is an apocalyptic number.

It is an amenable number.

1157595457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157595457 is an equidigital number, since it uses as much as digits as its factorization.

1157595457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102500, while the sum is 49.

The square root of 1157595457 is about 34023.4545130267. The cubic root of 1157595457 is about 1049.9910678001.

The spelling of 1157595457 in words is "one billion, one hundred fifty-seven million, five hundred ninety-five thousand, four hundred fifty-seven".