155795239 has 2 divisors, whose sum is σ = 155795240. Its totient is φ = 155795238.

The previous prime is 155795209. The next prime is 155795251. The reversal of 155795239 is 932597551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155795239 - 2²⁷ = 21577511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155795209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77897619 + 77897620.

It is an arithmetic number, because the mean of its divisors is an integer number (77897620).

Almost surely, 2^155795239 is an apocalyptic number.

155795239 is a deficient number, since it is larger than the sum of its proper divisors (1).

155795239 is an equidigital number, since it uses as much as digits as its factorization.

155795239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 425250, while the sum is 46.

The square root of 155795239 is about 12481.7963050196. The cubic root of 155795239 is about 538.0856298798.

The spelling of 155795239 in words is "one hundred fifty-five million, seven hundred ninety-five thousand, two hundred thirty-nine".