2155555152 has 200 divisors, whose sum is σ = 6541143840. Its totient is φ = 684391680.

The previous prime is 2155555141. The next prime is 2155555163. The reversal of 2155555152 is 2515555512.

2155555152 is a `hidden beast` number, since 2 + 1 + 5 + 55 + 551 + 52 = 666.

It is an interprime number because it is at equal distance from previous prime (2155555141) and next prime (2155555163).

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 39 ways as a sum of consecutive naturals, for example, 3119127 + ... + 3119817.

Almost surely, 2^2155555152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155555152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3270571920).

2155555152 is an abundant number, since it is smaller than the sum of its proper divisors (4385588688).

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

2155555152 is a wasteful number, since it uses less digits than its factorization.

2155555152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 808 counting only the distinct ones).

The product of its digits is 62500, while the sum is 36.

The square root of 2155555152 is about 46427.9565779068. The cubic root of 2155555152 is about 1291.7735259791.

The spelling of 2155555152 in words is "two billion, one hundred fifty-five million, five hundred fifty-five thousand, one hundred fifty-two".