155005164 has 30 divisors (see below), whose sum is σ = 405214964. Its totient is φ = 51668280.

The previous prime is 155005163. The next prime is 155005183. The reversal of 155005164 is 461500551.

It is a happy number.

155005164 is a `hidden beast` number, since 1 + 550 + 0 + 51 + 64 = 666.

155005164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (155005163) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 238882 + ... + 239529.

Almost surely, 2^155005164 is an apocalyptic number.

It is an amenable number.

155005164 is an abundant number, since it is smaller than the sum of its proper divisors (250209800).

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

155005164 is a wasteful number, since it uses less digits than its factorization.

155005164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478427 (or 478416 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 155005164 is about 12450.1069874921. The cubic root of 155005164 is about 537.1745008870.

The spelling of 155005164 in words is "one hundred fifty-five million, five thousand, one hundred sixty-four".