155305122 has 16 divisors (see below), whose sum is σ = 354983232. Its totient is φ = 44372880.

The previous prime is 155305109. The next prime is 155305123. The reversal of 155305122 is 221503551.

It is a happy number.

155305122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 155305092 and 155305101.

It is not an unprimeable number, because it can be changed into a prime (155305123) 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, 1848829 + ... + 1848912.

It is an arithmetic number, because the mean of its divisors is an integer number (22186452).

Almost surely, 2^155305122 is an apocalyptic number.

155305122 is an abundant number, since it is smaller than the sum of its proper divisors (199678110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155305122 is a wasteful number, since it uses less digits than its factorization.

155305122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697753.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 155305122 is about 12462.1475677349. The cubic root of 155305122 is about 537.5207817456.

Adding to 155305122 its reverse (221503551), we get a palindrome (376808673).

The spelling of 155305122 in words is "one hundred fifty-five million, three hundred five thousand, one hundred twenty-two".