155055051 has 12 divisors (see below), whose sum is σ = 228194928. Its totient is φ = 101419344.

The previous prime is 155055041. The next prime is 155055077. The reversal of 155055051 is 150550551.

155055051 is a `hidden beast` number, since 15 + 50 + 550 + 51 = 666.

It is not a de Polignac number, because 155055051 - 2⁷ = 155054923 is a prime.

It is a super-2 number, since 2×155055051² = 48084137681225202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155055001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162055 + ... + 163008.

It is an arithmetic number, because the mean of its divisors is an integer number (19016244).

Almost surely, 2^155055051 is an apocalyptic number.

155055051 is a deficient number, since it is larger than the sum of its proper divisors (73139877).

155055051 is a wasteful number, since it uses less digits than its factorization.

155055051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325122 (or 325119 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 155055051 is about 12452.1103030771. The cubic root of 155055051 is about 537.2321229456.

The spelling of 155055051 in words is "one hundred fifty-five million, fifty-five thousand, fifty-one".