155978912 has 24 divisors (see below), whose sum is σ = 310788576. Its totient is φ = 77048512.

The previous prime is 155978909. The next prime is 155978941. The reversal of 155978912 is 219879551.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26708 + ... + 32019.

It is an arithmetic number, because the mean of its divisors is an integer number (12949524).

Almost surely, 2^155978912 is an apocalyptic number.

It is an amenable number.

155978912 is a deficient number, since it is larger than the sum of its proper divisors (154809664).

155978912 is an equidigital number, since it uses as much as digits as its factorization.

155978912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58820 (or 58812 counting only the distinct ones).

The product of its digits is 226800, while the sum is 47.

The square root of 155978912 is about 12489.1517726385. The cubic root of 155978912 is about 538.2970034516.

The spelling of 155978912 in words is "one hundred fifty-five million, nine hundred seventy-eight thousand, nine hundred twelve".