2251243536 has 40 divisors (see below), whose sum is σ = 5819059104. Its totient is φ = 749982720.

The previous prime is 2251243507. The next prime is 2251243549. The reversal of 2251243536 is 6353421522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2251243497 and 2251243506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77056 + ... + 102176.

Almost surely, 2^2251243536 is an apocalyptic number.

It is an amenable number.

2251243536 is an abundant number, since it is smaller than the sum of its proper divisors (3567815568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251243536 is a wasteful number, since it uses less digits than its factorization.

2251243536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26999 (or 26993 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 2251243536 is about 47447.2711122568. The cubic root of 2251243536 is about 1310.6120590348.

The spelling of 2251243536 in words is "two billion, two hundred fifty-one million, two hundred forty-three thousand, five hundred thirty-six".