2251513244357 has 8 divisors (see below), whose sum is σ = 2470455752184. Its totient is φ = 2039106333888.

The previous prime is 2251513244329. The next prime is 2251513244377. The reversal of 2251513244357 is 7534423151522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72624321121 + 2178888923236 = 269489^2 + 1476106^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2251513244357 - 2¹⁰ = 2251513243333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251513244377) 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, 1633898618 + ... + 1633899995.

It is an arithmetic number, because the mean of its divisors is an integer number (308806969023).

Almost surely, 2^{2251513244357} is an apocalyptic number.

It is an amenable number.

2251513244357 is a deficient number, since it is larger than the sum of its proper divisors (218942507827).

2251513244357 is a wasteful number, since it uses less digits than its factorization.

2251513244357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267798679.

The product of its digits is 1008000, while the sum is 44.

Adding to 2251513244357 its reverse (7534423151522), we get a palindrome (9785936395879).

The spelling of 2251513244357 in words is "two trillion, two hundred fifty-one billion, five hundred thirteen million, two hundred forty-four thousand, three hundred fifty-seven".