155995568 has 40 divisors (see below), whose sum is σ = 318357600. Its totient is φ = 73903104.

The previous prime is 155995561. The next prime is 155995573. The reversal of 155995568 is 865599551.

It is not an unprimeable number, because it can be changed into a prime (155995561) 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, 38168 + ... + 42056.

It is an arithmetic number, because the mean of its divisors is an integer number (7958940).

Almost surely, 2^155995568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155995568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159178800).

155995568 is an abundant number, since it is smaller than the sum of its proper divisors (162362032).

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

155995568 is a wasteful number, since it uses less digits than its factorization.

155995568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029 (or 4023 counting only the distinct ones).

The product of its digits is 2430000, while the sum is 53.

The square root of 155995568 is about 12489.8185735422. The cubic root of 155995568 is about 538.3161632121.

The spelling of 155995568 in words is "one hundred fifty-five million, nine hundred ninety-five thousand, five hundred sixty-eight".