57231143 has 2 divisors, whose sum is σ = 57231144. Its totient is φ = 57231142.

The previous prime is 57231127. The next prime is 57231191. The reversal of 57231143 is 34113275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57231143 - 2⁴ = 57231127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57231103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28615571 + 28615572.

It is an arithmetic number, because the mean of its divisors is an integer number (28615572).

Almost surely, 2^57231143 is an apocalyptic number.

57231143 is a deficient number, since it is larger than the sum of its proper divisors (1).

57231143 is an equidigital number, since it uses as much as digits as its factorization.

57231143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 57231143 is about 7565.1267669485. The cubic root of 57231143 is about 385.3696186109.

The spelling of 57231143 in words is "fifty-seven million, two hundred thirty-one thousand, one hundred forty-three".