2155554324 has 72 divisors (see below), whose sum is σ = 6793270848. Its totient is φ = 559883520.

The previous prime is 2155554283. The next prime is 2155554371. The reversal of 2155554324 is 4234555512.

2155554324 is a `hidden beast` number, since 21 + 55 + 554 + 32 + 4 = 666.

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, 386037 + ... + 391580.

It is an arithmetic number, because the mean of its divisors is an integer number (94350984).

Almost surely, 2^2155554324 is an apocalyptic number.

It is an amenable number.

2155554324 is an abundant number, since it is smaller than the sum of its proper divisors (4637716524).

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

2155554324 is a wasteful number, since it uses less digits than its factorization.

2155554324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777645 (or 777640 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 2155554324 is about 46427.9476608648. The cubic root of 2155554324 is about 1291.7733605787.

The spelling of 2155554324 in words is "two billion, one hundred fifty-five million, five hundred fifty-four thousand, three hundred twenty-four".