155819552 has 144 divisors (see below), whose sum is σ = 389914560. Its totient is φ = 59953152.

The previous prime is 155819537. The next prime is 155819561. The reversal of 155819552 is 255918551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1877303 + ... + 1877385.

It is an arithmetic number, because the mean of its divisors is an integer number (2707740).

Almost surely, 2^155819552 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 155819552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194957280).

155819552 is an abundant number, since it is smaller than the sum of its proper divisors (234095008).

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

155819552 is a wasteful number, since it uses less digits than its factorization.

155819552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 138 counting only the distinct ones).

The product of its digits is 90000, while the sum is 41.

The square root of 155819552 is about 12482.7702053671. The cubic root of 155819552 is about 538.1136191720.

The spelling of 155819552 in words is "one hundred fifty-five million, eight hundred nineteen thousand, five hundred fifty-two".