57137143 has 6 divisors (see below), whose sum is σ = 65322456. Its totient is φ = 48957552.

The previous prime is 57137141. The next prime is 57137147. The reversal of 57137143 is 34173175.

It is not a de Polignac number, because 57137143 - 2¹ = 57137141 is a prime.

It is a super-2 number, since 2×57137143² = 6529306220404898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57137141) 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, 18571 + ... + 21427.

It is an arithmetic number, because the mean of its divisors is an integer number (10887076).

Almost surely, 2^57137143 is an apocalyptic number.

57137143 is a deficient number, since it is larger than the sum of its proper divisors (8185313).

57137143 is an frugal number, since it uses more digits than its factorization.

57137143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721 (or 2864 counting only the distinct ones).

The product of its digits is 8820, while the sum is 31.

The square root of 57137143 is about 7558.9114957115. The cubic root of 57137143 is about 385.1585179586.

The spelling of 57137143 in words is "fifty-seven million, one hundred thirty-seven thousand, one hundred forty-three".