2551287215 has 4 divisors (see below), whose sum is σ = 3061544664. Its totient is φ = 2041029768.

The previous prime is 2551287181. The next prime is 2551287227. The reversal of 2551287215 is 5127821552.

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 2551287215 - 2¹⁴ = 2551270831 is a prime.

It is a Duffinian number.

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, 255128717 + ... + 255128726.

It is an arithmetic number, because the mean of its divisors is an integer number (765386166).

Almost surely, 2^2551287215 is an apocalyptic number.

2551287215 is a deficient number, since it is larger than the sum of its proper divisors (510257449).

2551287215 is an equidigital number, since it uses as much as digits as its factorization.

2551287215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510257448.

The product of its digits is 56000, while the sum is 38.

The square root of 2551287215 is about 50510.2684114824. The cubic root of 2551287215 is about 1366.4270503630.

The spelling of 2551287215 in words is "two billion, five hundred fifty-one million, two hundred eighty-seven thousand, two hundred fifteen".