2251501313 has 4 divisors (see below), whose sum is σ = 2251712580. Its totient is φ = 2251290048.

The previous prime is 2251501297. The next prime is 2251501337. The reversal of 2251501313 is 3131051522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 973939264 + 1277562049 = 31208^2 + 35743^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251501313 - 2⁴ = 2251501297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251501363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88748 + ... + 111261.

It is an arithmetic number, because the mean of its divisors is an integer number (562928145).

Almost surely, 2^2251501313 is an apocalyptic number.

It is an amenable number.

2251501313 is a deficient number, since it is larger than the sum of its proper divisors (211267).

2251501313 is a wasteful number, since it uses less digits than its factorization.

2251501313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211266.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2251501313 is about 47449.9874920953. The cubic root of 2251501313 is about 1310.6620806851.

Adding to 2251501313 its reverse (3131051522), we get a palindrome (5382552835).

The spelling of 2251501313 in words is "two billion, two hundred fifty-one million, five hundred one thousand, three hundred thirteen".