2551224544 has 144 divisors (see below), whose sum is σ = 6128253936. Its totient is φ = 1033113600.

The previous prime is 2551224539. The next prime is 2551224553. The reversal of 2551224544 is 4454221552.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2159634 + ... + 2160814.

It is an arithmetic number, because the mean of its divisors is an integer number (42557319).

Almost surely, 2^2551224544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551224544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3064126968).

2551224544 is an abundant number, since it is smaller than the sum of its proper divisors (3577029392).

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

2551224544 is a wasteful number, since it uses less digits than its factorization.

2551224544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1230 counting only the distinct ones).

The product of its digits is 64000, while the sum is 34.

The square root of 2551224544 is about 50509.6480288667. The cubic root of 2551224544 is about 1366.4158617559.

The spelling of 2551224544 in words is "two billion, five hundred fifty-one million, two hundred twenty-four thousand, five hundred forty-four".