57142477 has 12 divisors (see below), whose sum is σ = 66920736. Its totient is φ = 48648600.

The previous prime is 57142471. The next prime is 57142489. The reversal of 57142477 is 77424175.

It is a de Polignac number, because none of the positive numbers 2^k-57142477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57142471) 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, 3538 + ... + 11260.

It is an arithmetic number, because the mean of its divisors is an integer number (5576728).

Almost surely, 2^57142477 is an apocalyptic number.

It is an amenable number.

57142477 is a deficient number, since it is larger than the sum of its proper divisors (9778259).

57142477 is a wasteful number, since it uses less digits than its factorization.

57142477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888 (or 7881 counting only the distinct ones).

The product of its digits is 54880, while the sum is 37.

The square root of 57142477 is about 7559.2643160562. The cubic root of 57142477 is about 385.1705029915.

The spelling of 57142477 in words is "fifty-seven million, one hundred forty-two thousand, four hundred seventy-seven".