2551313321 has 2 divisors, whose sum is σ = 2551313322. Its totient is φ = 2551313320.

The previous prime is 2551313291. The next prime is 2551313351. The reversal of 2551313321 is 1233131552.

It is a balanced prime because it is at equal distance from previous prime (2551313291) and next prime (2551313351).

It can be written as a sum of positive squares in only one way, i.e., 2434435600 + 116877721 = 49340^2 + 10811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2551313321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2551313351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275656660 + 1275656661.

It is an arithmetic number, because the mean of its divisors is an integer number (1275656661).

Almost surely, 2^2551313321 is an apocalyptic number.

It is an amenable number.

2551313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551313321 is an equidigital number, since it uses as much as digits as its factorization.

2551313321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 26.

The square root of 2551313321 is about 50510.5268335225. The cubic root of 2551313321 is about 1366.4317109938.

Adding to 2551313321 its reverse (1233131552), we get a palindrome (3784444873).

The spelling of 2551313321 in words is "two billion, five hundred fifty-one million, three hundred thirteen thousand, three hundred twenty-one".