255239137 has 2 divisors, whose sum is σ = 255239138. Its totient is φ = 255239136.

The previous prime is 255239111. The next prime is 255239177. The reversal of 255239137 is 731932552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255232576 + 6561 = 15976^2 + 81^2 .

It is a cyclic number.

It is not a de Polignac number, because 255239137 - 2⁷ = 255239009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255239096 and 255239105.

It is not a weakly prime, because it can be changed into another prime (255239177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127619568 + 127619569.

It is an arithmetic number, because the mean of its divisors is an integer number (127619569).

Almost surely, 2^255239137 is an apocalyptic number.

It is an amenable number.

255239137 is a deficient number, since it is larger than the sum of its proper divisors (1).

255239137 is an equidigital number, since it uses as much as digits as its factorization.

255239137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 37.

The square root of 255239137 is about 15976.2053379393. The cubic root of 255239137 is about 634.3307367888.

The spelling of 255239137 in words is "two hundred fifty-five million, two hundred thirty-nine thousand, one hundred thirty-seven".