155052239 has 2 divisors, whose sum is σ = 155052240. Its totient is φ = 155052238.

The previous prime is 155052229. The next prime is 155052251. The reversal of 155052239 is 932250551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155052239 - 2⁸ = 155051983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155052229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77526119 + 77526120.

It is an arithmetic number, because the mean of its divisors is an integer number (77526120).

Almost surely, 2^155052239 is an apocalyptic number.

155052239 is a deficient number, since it is larger than the sum of its proper divisors (1).

155052239 is an equidigital number, since it uses as much as digits as its factorization.

155052239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 155052239 is about 12451.9973899772. The cubic root of 155052239 is about 537.2288752693.

The spelling of 155052239 in words is "one hundred fifty-five million, fifty-two thousand, two hundred thirty-nine".