2551787436 has 48 divisors (see below), whose sum is σ = 6671024640. Its totient is φ = 752368320.

The previous prime is 2551787423. The next prime is 2551787443. The reversal of 2551787436 is 6347871552.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256356 + ... + 266123.

It is an arithmetic number, because the mean of its divisors is an integer number (138979680).

Almost surely, 2^2551787436 is an apocalyptic number.

It is an amenable number.

2551787436 is an abundant number, since it is smaller than the sum of its proper divisors (4119237204).

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

2551787436 is a wasteful number, since it uses less digits than its factorization.

2551787436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522534 (or 522532 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The square root of 2551787436 is about 50515.2198451120. The cubic root of 2551787436 is about 1366.5163478799.

It can be divided in two parts, 2551 and 787436, that added together give a palindrome (789987).

The spelling of 2551787436 in words is "two billion, five hundred fifty-one million, seven hundred eighty-seven thousand, four hundred thirty-six".