2551286784 has 44 divisors (see below), whose sum is σ = 6800117624. Its totient is φ = 850427904.

The previous prime is 2551286779. The next prime is 2551286819. The reversal of 2551286784 is 4876821552.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412177 + ... + 418320.

Almost surely, 2^2551286784 is an apocalyptic number.

2551286784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2551286784 is an abundant number, since it is smaller than the sum of its proper divisors (4248830840).

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

2551286784 is an equidigital number, since it uses as much as digits as its factorization.

2551286784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830520 (or 830502 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The square root of 2551286784 is about 50510.2641450230. The cubic root of 2551286784 is about 1366.4269734175.

The spelling of 2551286784 in words is "two billion, five hundred fifty-one million, two hundred eighty-six thousand, seven hundred eighty-four".