155797158 has 32 divisors (see below), whose sum is σ = 349113600. Its totient is φ = 45934560.

The previous prime is 155797141. The next prime is 155797181. The reversal of 155797158 is 851797551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29458 + ... + 34341.

It is an arithmetic number, because the mean of its divisors is an integer number (10909800).

Almost surely, 2^155797158 is an apocalyptic number.

155797158 is an abundant number, since it is smaller than the sum of its proper divisors (193316442).

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

155797158 is a wasteful number, since it uses less digits than its factorization.

155797158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63852.

The product of its digits is 441000, while the sum is 48.

The square root of 155797158 is about 12481.8731767311. The cubic root of 155797158 is about 538.0878391516.

The spelling of 155797158 in words is "one hundred fifty-five million, seven hundred ninety-seven thousand, one hundred fifty-eight".