2155607472 has 80 divisors (see below), whose sum is σ = 5952619008. Its totient is φ = 670517760.

The previous prime is 2155607459. The next prime is 2155607477. The reversal of 2155607472 is 2747065512.

2155607472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2155607472.

It is not an unprimeable number, because it can be changed into a prime (2155607477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21453 + ... + 69075.

Almost surely, 2^2155607472 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 2155607472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2976309504).

2155607472 is an abundant number, since it is smaller than the sum of its proper divisors (3797011536).

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

2155607472 is a wasteful number, since it uses less digits than its factorization.

2155607472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47698 (or 47692 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 2155607472 is about 46428.5200281034. The cubic root of 2155607472 is about 1291.7839772765.

The spelling of 2155607472 in words is "two billion, one hundred fifty-five million, six hundred seven thousand, four hundred seventy-two".