2152554444 has 36 divisors (see below), whose sum is σ = 5442781344. Its totient is φ = 717306912.

The previous prime is 2152554421. The next prime is 2152554463. The reversal of 2152554444 is 4444552512.

2152554444 is a `hidden beast` number, since 21 + 52 + 5 + 544 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2152554399 and 2152554408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158989 + ... + 171995.

Almost surely, 2^2152554444 is an apocalyptic number.

It is an amenable number.

2152554444 is an abundant number, since it is smaller than the sum of its proper divisors (3290226900).

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

2152554444 is a wasteful number, since it uses less digits than its factorization.

2152554444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17614 (or 17609 counting only the distinct ones).

The product of its digits is 128000, while the sum is 36.

The square root of 2152554444 is about 46395.6295786575. The cubic root of 2152554444 is about 1291.1738296981.

The spelling of 2152554444 in words is "two billion, one hundred fifty-two million, five hundred fifty-four thousand, four hundred forty-four".