2145522152 has 32 divisors (see below), whose sum is σ = 4249217280. Its totient is φ = 1014007680.

The previous prime is 2145522151. The next prime is 2145522157. The reversal of 2145522152 is 2512255412.

It is a happy number.

It is a super-2 number, since 2×2145522152² = 9206530609445422208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2145522151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89933 + ... + 111260.

It is an arithmetic number, because the mean of its divisors is an integer number (132788040).

Almost surely, 2^2145522152 is an apocalyptic number.

It is an amenable number.

2145522152 is a deficient number, since it is larger than the sum of its proper divisors (2103695128).

2145522152 is a wasteful number, since it uses less digits than its factorization.

2145522152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201273 (or 201269 counting only the distinct ones).

The product of its digits is 8000, while the sum is 29.

The square root of 2145522152 is about 46319.7814329904. The cubic root of 2145522152 is about 1289.7662280953.

Adding to 2145522152 its reverse (2512255412), we get a palindrome (4657777564).

The spelling of 2145522152 in words is "two billion, one hundred forty-five million, five hundred twenty-two thousand, one hundred fifty-two".