2152553221 has 16 divisors (see below), whose sum is σ = 2686618368. Its totient is φ = 1679126400.

The previous prime is 2152553203. The next prime is 2152553237. The reversal of 2152553221 is 1223552512.

It is not a de Polignac number, because 2152553221 - 2⁹ = 2152552709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2152553221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152553251) 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, 160120 + ... + 173041.

It is an arithmetic number, because the mean of its divisors is an integer number (167913648).

Almost surely, 2^2152553221 is an apocalyptic number.

It is an amenable number.

2152553221 is a deficient number, since it is larger than the sum of its proper divisors (534065147).

2152553221 is a wasteful number, since it uses less digits than its factorization.

2152553221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333252.

The product of its digits is 6000, while the sum is 28.

The square root of 2152553221 is about 46395.6163985349. The cubic root of 2152553221 is about 1291.1735851660.

The spelling of 2152553221 in words is "two billion, one hundred fifty-two million, five hundred fifty-three thousand, two hundred twenty-one".