155978788 has 24 divisors (see below), whose sum is σ = 317846592. Its totient is φ = 65586144.

The previous prime is 155978773. The next prime is 155978803. The reversal of 155978788 is 887879551.

It is an interprime number because it is at equal distance from previous prime (155978773) and next prime (155978803).

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, 51070 + ... + 54037.

It is an arithmetic number, because the mean of its divisors is an integer number (13243608).

Almost surely, 2^155978788 is an apocalyptic number.

It is an amenable number.

155978788 is an abundant number, since it is smaller than the sum of its proper divisors (161867804).

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

155978788 is a wasteful number, since it uses less digits than its factorization.

155978788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105171 (or 105169 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 58.

The square root of 155978788 is about 12489.1468083292. The cubic root of 155978788 is about 538.2968608066.

The spelling of 155978788 in words is "one hundred fifty-five million, nine hundred seventy-eight thousand, seven hundred eighty-eight".