2152222544 has 20 divisors (see below), whose sum is σ = 4187241300. Its totient is φ = 1071644160.

The previous prime is 2152222519. The next prime is 2152222547. The reversal of 2152222544 is 4452222512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1298881600 + 853340944 = 36040^2 + 29212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152222547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275219 + ... + 282930.

It is an arithmetic number, because the mean of its divisors is an integer number (209362065).

Almost surely, 2^2152222544 is an apocalyptic number.

It is an amenable number.

2152222544 is a deficient number, since it is larger than the sum of its proper divisors (2035018756).

2152222544 is a wasteful number, since it uses less digits than its factorization.

2152222544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558398 (or 558392 counting only the distinct ones).

The product of its digits is 12800, while the sum is 29.

The square root of 2152222544 is about 46392.0525952452. The cubic root of 2152222544 is about 1291.1074647300.

The spelling of 2152222544 in words is "two billion, one hundred fifty-two million, two hundred twenty-two thousand, five hundred forty-four".