2551487922 has 96 divisors (see below), whose sum is σ = 6110208000. Its totient is φ = 766337760.

The previous prime is 2551487843. The next prime is 2551487927. The reversal of 2551487922 is 2297841552.

2551487922 is a `hidden beast` number, since 2 + 551 + 4 + 8 + 7 + 92 + 2 = 666.

It is a super-2 number, since 2×2551487922² = 13020181232223756168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2551487927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 623479 + ... + 627557.

It is an arithmetic number, because the mean of its divisors is an integer number (63648000).

Almost surely, 2^2551487922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551487922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3055104000).

2551487922 is an abundant number, since it is smaller than the sum of its proper divisors (3558720078).

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

2551487922 is a wasteful number, since it uses less digits than its factorization.

2551487922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196 (or 4193 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 2551487922 is about 50512.2551664445. The cubic root of 2551487922 is about 1366.4628812018.

The spelling of 2551487922 in words is "two billion, five hundred fifty-one million, four hundred eighty-seven thousand, nine hundred twenty-two".