155090879 has 8 divisors (see below), whose sum is σ = 158202720. Its totient is φ = 151986016.

The previous prime is 155090857. The next prime is 155090891. The reversal of 155090879 is 978090551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155090879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155590879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81689 + ... + 83565.

It is an arithmetic number, because the mean of its divisors is an integer number (19775340).

Almost surely, 2^155090879 is an apocalyptic number.

155090879 is a deficient number, since it is larger than the sum of its proper divisors (3111841).

155090879 is a wasteful number, since it uses less digits than its factorization.

155090879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 155090879 is about 12453.5488516326. The cubic root of 155090879 is about 537.2734985088.

It can be divided in two parts, 1550 and 90879, that added together give a palindrome (92429).

The spelling of 155090879 in words is "one hundred fifty-five million, ninety thousand, eight hundred seventy-nine".