155877120 has 216 divisors, whose sum is σ = 616682976. Its totient is φ = 35610624.

The previous prime is 155877109. The next prime is 155877167. The reversal of 155877120 is 21778551.

155877120 is a `hidden beast` number, since 1 + 5 + 587 + 71 + 2 + 0 = 666.

155877120 is digitally balanced in base 3, 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 (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79674 + ... + 81606.

Almost surely, 2^155877120 is an apocalyptic number.

155877120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155877120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308341488).

155877120 is an abundant number, since it is smaller than the sum of its proper divisors (460805856).

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

155877120 is a wasteful number, since it uses less digits than its factorization.

155877120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The square root of 155877120 is about 12485.0758908386. The cubic root of 155877120 is about 538.1798802418.

The spelling of 155877120 in words is "one hundred fifty-five million, eight hundred seventy-seven thousand, one hundred twenty".