2251313453 has 4 divisors (see below), whose sum is σ = 2251816380. Its totient is φ = 2250810528.

The previous prime is 2251313447. The next prime is 2251313459. The reversal of 2251313453 is 3543131522.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2251313447) and next prime (2251313459).

It can be written as a sum of positive squares in 2 ways, for example, as 16104169 + 2235209284 = 4013^2 + 47278^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251313453 - 2⁴ = 2251313437 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 (2251313459) 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, 244688 + ... + 253721.

It is an arithmetic number, because the mean of its divisors is an integer number (562954095).

Almost surely, 2^2251313453 is an apocalyptic number.

It is an amenable number.

2251313453 is a deficient number, since it is larger than the sum of its proper divisors (502927).

2251313453 is an equidigital number, since it uses as much as digits as its factorization.

2251313453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502926.

The product of its digits is 10800, while the sum is 29.

The square root of 2251313453 is about 47448.0078928505. The cubic root of 2251313453 is about 1310.6256268124.

Adding to 2251313453 its reverse (3543131522), we get a palindrome (5794444975).

The spelling of 2251313453 in words is "two billion, two hundred fifty-one million, three hundred thirteen thousand, four hundred fifty-three".