2551822812 has 96 divisors (see below), whose sum is σ = 8248343040. Its totient is φ = 662808960.

The previous prime is 2551822807. The next prime is 2551822843. The reversal of 2551822812 is 2182281552.

2551822812 is a `hidden beast` number, since 2 + 551 + 8 + 22 + 81 + 2 = 666.

2551822812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145113 + ... + 161744.

It is an arithmetic number, because the mean of its divisors is an integer number (85920240).

Almost surely, 2^2551822812 is an apocalyptic number.

2551822812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2551822812 is an abundant number, since it is smaller than the sum of its proper divisors (5696520228).

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

2551822812 is a wasteful number, since it uses less digits than its factorization.

2551822812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306888 (or 306880 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 2551822812 is about 50515.5699957944. The cubic root of 2551822812 is about 1366.5226626246.

The spelling of 2551822812 in words is "two billion, five hundred fifty-one million, eight hundred twenty-two thousand, eight hundred twelve".