155955204 has 18 divisors (see below), whose sum is σ = 394220190. Its totient is φ = 51985056.

The previous prime is 155955181. The next prime is 155955221. The reversal of 155955204 is 402559551.

155955204 is a `hidden beast` number, since 15 + 595 + 52 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 125484804 + 30470400 = 11202^2 + 5520^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4332089 = 155955204 / (1 + 5 + 5 + 9 + 5 + 5 + 2 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2166009 + ... + 2166080.

Almost surely, 2^155955204 is an apocalyptic number.

It is an amenable number.

155955204 is an abundant number, since it is smaller than the sum of its proper divisors (238264986).

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

155955204 is a wasteful number, since it uses less digits than its factorization.

155955204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332099 (or 4332094 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 155955204 is about 12488.2025928474. The cubic root of 155955204 is about 538.2697292690.

The spelling of 155955204 in words is "one hundred fifty-five million, nine hundred fifty-five thousand, two hundred four".