2551400244 has 36 divisors (see below), whose sum is σ = 6456757216. Its totient is φ = 849493008.

The previous prime is 2551400221. The next prime is 2551400261. The reversal of 2551400244 is 4420041552.

2551400244 is a `hidden beast` number, since 255 + 1 + 400 + 2 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8344 + ... + 71919.

Almost surely, 2^2551400244 is an apocalyptic number.

It is an amenable number.

2551400244 is an abundant number, since it is smaller than the sum of its proper divisors (3905356972).

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

2551400244 is a wasteful number, since it uses less digits than its factorization.

2551400244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81156 (or 81151 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2551400244 is about 50511.3872705947. The cubic root of 2551400244 is about 1366.4472288833.

Adding to 2551400244 its reverse (4420041552), we get a palindrome (6971441796).

The spelling of 2551400244 in words is "two billion, five hundred fifty-one million, four hundred thousand, two hundred forty-four".