155960550 has 288 divisors, whose sum is σ = 496173600. Its totient is φ = 34836480.

The previous prime is 155960549. The next prime is 155960593. The reversal of 155960550 is 55069551.

155960550 is a `hidden beast` number, since 15 + 5 + 96 + 0 + 550 = 666.

155960550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4215132 + ... + 4215168.

It is an arithmetic number, because the mean of its divisors is an integer number (1722825).

Almost surely, 2^155960550 is an apocalyptic number.

155960550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155960550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248086800).

155960550 is an abundant number, since it is smaller than the sum of its proper divisors (340213050).

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

155960550 is a wasteful number, since it uses less digits than its factorization.

155960550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

The square root of 155960550 is about 12488.4166330244. The cubic root of 155960550 is about 538.2758796614.

The spelling of 155960550 in words is "one hundred fifty-five million, nine hundred sixty thousand, five hundred fifty".