155864044 has 24 divisors (see below), whose sum is σ = 312238080. Its totient is φ = 66689616.

The previous prime is 155864039. The next prime is 155864047. The reversal of 155864044 is 440468551.

155864044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 155863994 and 155864012.

It is not an unprimeable number, because it can be changed into a prime (155864047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14229 + ... + 22675.

It is an arithmetic number, because the mean of its divisors is an integer number (13009920).

Almost surely, 2^155864044 is an apocalyptic number.

155864044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155864044 is an abundant number, since it is smaller than the sum of its proper divisors (156374036).

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

155864044 is a wasteful number, since it uses less digits than its factorization.

155864044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9117 (or 9115 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 155864044 is about 12484.5522146371. The cubic root of 155864044 is about 538.1648311294.

The spelling of 155864044 in words is "one hundred fifty-five million, eight hundred sixty-four thousand, forty-four".