2154445056 has 81 divisors (see below), whose sum is σ = 6218226651. Its totient is φ = 717405696.

The previous prime is 2154445021. The next prime is 2154445067. The reversal of 2154445056 is 6505444512.

The square root of 2154445056 is 46416.

It is a perfect power (a square), and thus also a powerful number.

2154445056 is a `hidden beast` number, since 2 + 154 + 4 + 450 + 56 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2154445056.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2227485 + ... + 2228451.

Almost surely, 2^2154445056 is an apocalyptic number.

2154445056 is the 46416-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154445056

2154445056 is an abundant number, since it is smaller than the sum of its proper divisors (4063781595).

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

2154445056 is an frugal number, since it uses more digits than its factorization.

2154445056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The cubic root of 2154445056 is about 1291.5517364231.

Multiplying 2154445056 by its sum of digits (36), we get a square (77560022016 = 278496²).

2154445056 divided by its sum of digits (36) gives a square (59845696 = 7736²).

Adding to 2154445056 its reverse (6505444512), we get a palindrome (8659889568).

The spelling of 2154445056 in words is "two billion, one hundred fifty-four million, four hundred forty-five thousand, fifty-six".