2251231253 has 4 divisors (see below), whose sum is σ = 2323851648. Its totient is φ = 2178610860.

The previous prime is 2251231249. The next prime is 2251231259. The reversal of 2251231253 is 3521321522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3521321522 = 2 ⋅1760660761.

It is a cyclic number.

It is not a de Polignac number, because 2251231253 - 2² = 2251231249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251231259) 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, 36310151 + ... + 36310212.

It is an arithmetic number, because the mean of its divisors is an integer number (580962912).

Almost surely, 2^2251231253 is an apocalyptic number.

It is an amenable number.

2251231253 is a deficient number, since it is larger than the sum of its proper divisors (72620395).

2251231253 is an equidigital number, since it uses as much as digits as its factorization.

2251231253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72620394.

The product of its digits is 3600, while the sum is 26.

The square root of 2251231253 is about 47447.1416736562. The cubic root of 2251231253 is about 1310.6096754222.

Adding to 2251231253 its reverse (3521321522), we get a palindrome (5772552775).

The spelling of 2251231253 in words is "two billion, two hundred fifty-one million, two hundred thirty-one thousand, two hundred fifty-three".