2151254532 has 24 divisors (see below), whose sum is σ = 5736678976. Its totient is φ = 614644128.

The previous prime is 2151254513. The next prime is 2151254533. The reversal of 2151254532 is 2354521512.

It is a super-2 number, since 2×2151254532² = 9255792122901078048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2151254532.

It is not an unprimeable number, because it can be changed into a prime (2151254533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12805003 + ... + 12805170.

Almost surely, 2^2151254532 is an apocalyptic number.

It is an amenable number.

2151254532 is an abundant number, since it is smaller than the sum of its proper divisors (3585424444).

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

2151254532 is a wasteful number, since it uses less digits than its factorization.

2151254532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25610187 (or 25610185 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 2151254532 is about 46381.6184711142. The cubic root of 2151254532 is about 1290.9138671942.

The spelling of 2151254532 in words is "two billion, one hundred fifty-one million, two hundred fifty-four thousand, five hundred thirty-two".