47131057 has 4 divisors (see below), whose sum is σ = 47548260. Its totient is φ = 46713856.

The previous prime is 47131043. The next prime is 47131087. The reversal of 47131057 is 75013174.

47131057 = 589² + 590² + ... + 701².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75013174 = 2 ⋅37506587.

It can be written as a sum of positive squares in 2 ways, for example, as 2187441 + 44943616 = 1479^2 + 6704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47131057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47131027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208432 + ... + 208657.

It is an arithmetic number, because the mean of its divisors is an integer number (11887065).

Almost surely, 2^47131057 is an apocalyptic number.

It is an amenable number.

47131057 is a deficient number, since it is larger than the sum of its proper divisors (417203).

47131057 is a wasteful number, since it uses less digits than its factorization.

47131057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417202.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 47131057 is about 6865.2062605577. The cubic root of 47131057 is about 361.2177307015.

The spelling of 47131057 in words is "forty-seven million, one hundred thirty-one thousand, fifty-seven".