2551572236 has 6 divisors (see below), whose sum is σ = 4465251420. Its totient is φ = 1275786116.

The previous prime is 2551572217. The next prime is 2551572259. The reversal of 2551572236 is 6322751552.

It is a self number, because there is not a number n which added to its sum of digits gives 2551572236.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318946526 + ... + 318946533.

It is an arithmetic number, because the mean of its divisors is an integer number (744208570).

Almost surely, 2^2551572236 is an apocalyptic number.

It is an amenable number.

2551572236 is a deficient number, since it is larger than the sum of its proper divisors (1913679184).

2551572236 is a wasteful number, since it uses less digits than its factorization.

2551572236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637893063 (or 637893061 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The square root of 2551572236 is about 50513.0897490937. The cubic root of 2551572236 is about 1366.4779326392.

The spelling of 2551572236 in words is "two billion, five hundred fifty-one million, five hundred seventy-two thousand, two hundred thirty-six".