115457257 has 6 divisors (see below), whose sum is σ = 116754554. Its totient is φ = 114162240.

The previous prime is 115457219. The next prime is 115457261. The reversal of 115457257 is 752754511.

It can be written as a sum of positive squares in only one way, i.e., 96412761 + 19044496 = 9819^2 + 4364^2 .

It is not a de Polignac number, because 115457257 - 2¹⁹ = 114932969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115454257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105282 + ... + 106372.

Almost surely, 2^115457257 is an apocalyptic number.

It is an amenable number.

115457257 is a deficient number, since it is larger than the sum of its proper divisors (1297297).

115457257 is an frugal number, since it uses more digits than its factorization.

115457257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 1188 counting only the distinct ones).

The product of its digits is 49000, while the sum is 37.

The square root of 115457257 is about 10745.1038617596. The cubic root of 115457257 is about 486.9380869055.

The spelling of 115457257 in words is "one hundred fifteen million, four hundred fifty-seven thousand, two hundred fifty-seven".