47115657 has 6 divisors (see below), whose sum is σ = 68055962. Its totient is φ = 31410432.

The previous prime is 47115647. The next prime is 47115701. The reversal of 47115657 is 75651174.

It can be written as a sum of positive squares in only one way, i.e., 34327881 + 12787776 = 5859^2 + 3576^2 .

It is not a de Polignac number, because 47115657 - 2⁴ = 47115641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47115637) 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, 2617528 + ... + 2617545.

Almost surely, 2^47115657 is an apocalyptic number.

It is an amenable number.

47115657 is a deficient number, since it is larger than the sum of its proper divisors (20940305).

47115657 is a wasteful number, since it uses less digits than its factorization.

47115657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5235079 (or 5235076 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 47115657 is about 6864.0845711573. The cubic root of 47115657 is about 361.1783839707.

The spelling of 47115657 in words is "forty-seven million, one hundred fifteen thousand, six hundred fifty-seven".