2151455232 has 40 divisors (see below), whose sum is σ = 5731615296. Its totient is φ = 717151232.

The previous prime is 2151455231. The next prime is 2151455239. The reversal of 2151455232 is 2325541512.

It is a self number, because there is not a number n which added to its sum of digits gives 2151455232.

It is not an unprimeable number, because it can be changed into a prime (2151455231) 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, 698808 + ... + 701879.

Almost surely, 2^2151455232 is an apocalyptic number.

It is an amenable number.

2151455232 is an abundant number, since it is smaller than the sum of its proper divisors (3580160064).

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

2151455232 is an equidigital number, since it uses as much as digits as its factorization.

2151455232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400708 (or 1400692 counting only the distinct ones).

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

The square root of 2151455232 is about 46383.7819932786. The cubic root of 2151455232 is about 1290.9540109573.

Adding to 2151455232 its reverse (2325541512), we get a palindrome (4476996744).

The spelling of 2151455232 in words is "two billion, one hundred fifty-one million, four hundred fifty-five thousand, two hundred thirty-two".