155402 has 16 divisors (see below), whose sum is σ = 258720. Its totient is φ = 69552.

The previous prime is 155399. The next prime is 155413. The reversal of 155402 is 204551.

155402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (16170).

2¹⁵⁵⁴⁰² is an apocalyptic number.

155402 is a deficient number, since it is larger than the sum of its proper divisors (103318).

155402 is a wasteful number, since it uses less digits than its factorization.

155402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 155402 is about 394.2106036118. The cubic root of 155402 is about 53.7632525462.

Adding to 155402 its reverse (204551), we get a palindrome (359953).

The spelling of 155402 in words is "one hundred fifty-five thousand, four hundred two".