57440131 has 16 divisors (see below), whose sum is σ = 70101504. Its totient is φ = 45993024.

The previous prime is 57440087. The next prime is 57440147. The reversal of 57440131 is 13104475.

It is not a de Polignac number, because 57440131 - 2⁹ = 57439619 is a prime.

It is a super-2 number, since 2×57440131² = 6598737298594322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57440096 and 57440105.

It is not an unprimeable number, because it can be changed into a prime (57440171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2775 + ... + 11071.

It is an arithmetic number, because the mean of its divisors is an integer number (4381344).

Almost surely, 2^57440131 is an apocalyptic number.

57440131 is a deficient number, since it is larger than the sum of its proper divisors (12661373).

57440131 is a wasteful number, since it uses less digits than its factorization.

57440131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8370.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 57440131 is about 7578.9267709881. The cubic root of 57440131 is about 385.8381268877.

The spelling of 57440131 in words is "fifty-seven million, four hundred forty thousand, one hundred thirty-one".