155122 has 12 divisors (see below), whose sum is σ = 256158. Its totient is φ = 70400.

The previous prime is 155119. The next prime is 155137. The reversal of 155122 is 221551.

It can be written as a sum of positive squares in only one way, i.e., 101761 + 53361 = 319^2 + 231^2 .

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 155096 and 155105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79 + ... + 562.

2¹⁵⁵¹²² is an apocalyptic number.

155122 is a deficient number, since it is larger than the sum of its proper divisors (101036).

155122 is a wasteful number, since it uses less digits than its factorization.

155122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 654 counting only the distinct ones).

The product of its digits is 100, while the sum is 16.

The square root of 155122 is about 393.8553033793. The cubic root of 155122 is about 53.7309433075.

Adding to 155122 its reverse (221551), we get a palindrome (376673).

The spelling of 155122 in words is "one hundred fifty-five thousand, one hundred twenty-two".