155972874 has 16 divisors (see below), whose sum is σ = 312103008. Its totient is φ = 51964752.

The previous prime is 155972857. The next prime is 155972893. The reversal of 155972874 is 478279551.

155972874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 9289 + ... + 19955.

It is an arithmetic number, because the mean of its divisors is an integer number (19506438).

Almost surely, 2^155972874 is an apocalyptic number.

155972874 is an abundant number, since it is smaller than the sum of its proper divisors (156130134).

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

155972874 is a wasteful number, since it uses less digits than its factorization.

155972874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13109.

The product of its digits is 705600, while the sum is 48.

The square root of 155972874 is about 12488.9100405119. The cubic root of 155972874 is about 538.2900574716.

The spelling of 155972874 in words is "one hundred fifty-five million, nine hundred seventy-two thousand, eight hundred seventy-four".