2551044450 has 96 divisors (see below), whose sum is σ = 6571186560. Its totient is φ = 654169600.

The previous prime is 2551044449. The next prime is 2551044491. The reversal of 2551044450 is 544401552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1221307 + ... + 1223393.

It is an arithmetic number, because the mean of its divisors is an integer number (68449860).

Almost surely, 2^2551044450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551044450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3285593280).

2551044450 is an abundant number, since it is smaller than the sum of its proper divisors (4020142110).

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

2551044450 is a wasteful number, since it uses less digits than its factorization.

2551044450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2407 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2551044450 is about 50507.8652290908. The cubic root of 2551044450 is about 1366.3837086879.

The spelling of 2551044450 in words is "two billion, five hundred fifty-one million, forty-four thousand, four hundred fifty".