155922972 has 24 divisors (see below), whose sum is σ = 366441600. Its totient is φ = 51599856.

The previous prime is 155922967. The next prime is 155922983. The reversal of 155922972 is 279229551.

155922972 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 45072 + ... + 48407.

It is an arithmetic number, because the mean of its divisors is an integer number (15268400).

Almost surely, 2^155922972 is an apocalyptic number.

155922972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155922972 is an abundant number, since it is smaller than the sum of its proper divisors (210518628).

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

155922972 is a wasteful number, since it uses less digits than its factorization.

155922972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93625 (or 93623 counting only the distinct ones).

The product of its digits is 113400, while the sum is 42.

The square root of 155922972 is about 12486.9120281998. The cubic root of 155922972 is about 538.2326444634.

It can be divided in two parts, 1559 and 22972, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 155922972 in words is "one hundred fifty-five million, nine hundred twenty-two thousand, nine hundred seventy-two".