57144139 has 12 divisors (see below), whose sum is σ = 62256600. Its totient is φ = 52425984.

The previous prime is 57144049. The next prime is 57144161. The reversal of 57144139 is 93144175.

It is not a de Polignac number, because 57144139 - 2⁷ = 57144011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57144839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29307 + ... + 31195.

It is an arithmetic number, because the mean of its divisors is an integer number (5188050).

Almost surely, 2^57144139 is an apocalyptic number.

57144139 is a deficient number, since it is larger than the sum of its proper divisors (5112461).

57144139 is a wasteful number, since it uses less digits than its factorization.

57144139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094 (or 2081 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 57144139 is about 7559.3742465895. The cubic root of 57144139 is about 385.1742372081.

The spelling of 57144139 in words is "fifty-seven million, one hundred forty-four thousand, one hundred thirty-nine".