2551587480 has 448 divisors, whose sum is σ = 9519068160. Its totient is φ = 611380224.

The previous prime is 2551587473. The next prime is 2551587491. The reversal of 2551587480 is 847851552.

2551587480 is a `hidden beast` number, since 2 + 551 + 58 + 7 + 48 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 20091177 + ... + 20091303.

It is an arithmetic number, because the mean of its divisors is an integer number (21247920).

Almost surely, 2^2551587480 is an apocalyptic number.

2551587480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551587480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4759534080).

2551587480 is an abundant number, since it is smaller than the sum of its proper divisors (6967480680).

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

2551587480 is a wasteful number, since it uses less digits than its factorization.

2551587480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The square root of 2551587480 is about 50513.2406404499. The cubic root of 2551587480 is about 1366.4806539089.

The spelling of 2551587480 in words is "two billion, five hundred fifty-one million, five hundred eighty-seven thousand, four hundred eighty".