155015039 has 2 divisors, whose sum is σ = 155015040. Its totient is φ = 155015038.

The previous prime is 155015011. The next prime is 155015041. The reversal of 155015039 is 930510551.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (930510551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155015039 - 2²⁴ = 138237823 is a prime.

Together with 155015041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155015339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77507519 + 77507520.

It is an arithmetic number, because the mean of its divisors is an integer number (77507520).

Almost surely, 2^155015039 is an apocalyptic number.

155015039 is a deficient number, since it is larger than the sum of its proper divisors (1).

155015039 is an equidigital number, since it uses as much as digits as its factorization.

155015039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 29.

The square root of 155015039 is about 12450.5035641134. The cubic root of 155015039 is about 537.1859080028.

The spelling of 155015039 in words is "one hundred fifty-five million, fifteen thousand, thirty-nine".