2551441551 has 4 divisors (see below), whose sum is σ = 3401922072. Its totient is φ = 1700961032.

The previous prime is 2551441517. The next prime is 2551441553. The reversal of 2551441551 is 1551441552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2551441551 - 2¹⁰ = 2551440527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551441553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425240256 + ... + 425240261.

It is an arithmetic number, because the mean of its divisors is an integer number (850480518).

Almost surely, 2^2551441551 is an apocalyptic number.

2551441551 is a deficient number, since it is larger than the sum of its proper divisors (850480521).

2551441551 is an equidigital number, since it uses as much as digits as its factorization.

2551441551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850480520.

The product of its digits is 20000, while the sum is 33.

The square root of 2551441551 is about 50511.7961569374. The cubic root of 2551441551 is about 1366.4546030734.

Subtracting from 2551441551 its reverse (1551441552), we obtain a palindrome (999999999).

The spelling of 2551441551 in words is "two billion, five hundred fifty-one million, four hundred forty-one thousand, five hundred fifty-one".