2551661152 has 12 divisors (see below), whose sum is σ = 5023582956. Its totient is φ = 1275830560.

The previous prime is 2551661143. The next prime is 2551661153. The reversal of 2551661152 is 2511661552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551661153) by changing a digit.

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 as a sum of consecutive naturals, namely, 39869674 + ... + 39869737.

It is an arithmetic number, because the mean of its divisors is an integer number (418631913).

Almost surely, 2^2551661152 is an apocalyptic number.

It is an amenable number.

2551661152 is a deficient number, since it is larger than the sum of its proper divisors (2471921804).

2551661152 is an equidigital number, since it uses as much as digits as its factorization.

2551661152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79739421 (or 79739413 counting only the distinct ones).

The product of its digits is 18000, while the sum is 34.

The square root of 2551661152 is about 50513.9698697301. The cubic root of 2551661152 is about 1366.4938052502.

It can be divided in two parts, 25516 and 61152, that added together give a palindrome (86668).

The spelling of 2551661152 in words is "two billion, five hundred fifty-one million, six hundred sixty-one thousand, one hundred fifty-two".