539123857 has 2 divisors, whose sum is σ = 539123858. Its totient is φ = 539123856.

The previous prime is 539123843. The next prime is 539123881. The reversal of 539123857 is 758321935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340623936 + 198499921 = 18456^2 + 14089^2 .

It is a cyclic number.

It is not a de Polignac number, because 539123857 - 2¹¹ = 539121809 is a prime.

It is not a weakly prime, because it can be changed into another prime (539123807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269561928 + 269561929.

It is an arithmetic number, because the mean of its divisors is an integer number (269561929).

Almost surely, 2^539123857 is an apocalyptic number.

It is an amenable number.

539123857 is a deficient number, since it is larger than the sum of its proper divisors (1).

539123857 is an equidigital number, since it uses as much as digits as its factorization.

539123857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 43.

The square root of 539123857 is about 23219.0408285958. The cubic root of 539123857 is about 813.8846358370.

The spelling of 539123857 in words is "five hundred thirty-nine million, one hundred twenty-three thousand, eight hundred fifty-seven".