2251224637 has 4 divisors (see below), whose sum is σ = 2251846240. Its totient is φ = 2250603036.

The previous prime is 2251224617. The next prime is 2251224641. The reversal of 2251224637 is 7364221522.

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.

It is a cyclic number.

It is not a de Polignac number, because 2251224637 - 2⁷ = 2251224509 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 (2251224617) 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, 305337 + ... + 312622.

It is an arithmetic number, because the mean of its divisors is an integer number (562961560).

Almost surely, 2^2251224637 is an apocalyptic number.

It is an amenable number.

2251224637 is a deficient number, since it is larger than the sum of its proper divisors (621603).

2251224637 is an equidigital number, since it uses as much as digits as its factorization.

2251224637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621602.

The product of its digits is 40320, while the sum is 34.

The square root of 2251224637 is about 47447.0719539151. The cubic root of 2251224637 is about 1310.6083915319.

The spelling of 2251224637 in words is "two billion, two hundred fifty-one million, two hundred twenty-four thousand, six hundred thirty-seven".