2551321224 has 48 divisors (see below), whose sum is σ = 6929695500. Its totient is φ = 847995264.

The previous prime is 2551321187. The next prime is 2551321237. The reversal of 2551321224 is 4221231552.

2551321224 is a `hidden beast` number, since 25 + 513 + 2 + 122 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2519036100 + 32285124 = 50190^2 + 5682^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25639 + ... + 75894.

Almost surely, 2^2551321224 is an apocalyptic number.

2551321224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2551321224 is an abundant number, since it is smaller than the sum of its proper divisors (4378374276).

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

2551321224 is a wasteful number, since it uses less digits than its factorization.

2551321224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101894 (or 101887 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2551321224 is about 50510.6050646792. The cubic root of 2551321224 is about 1366.4331218879.

Adding to 2551321224 its reverse (4221231552), we get a palindrome (6772552776).

The spelling of 2551321224 in words is "two billion, five hundred fifty-one million, three hundred twenty-one thousand, two hundred twenty-four".