2551005867 has 4 divisors (see below), whose sum is σ = 3401341160. Its totient is φ = 1700670576.

The previous prime is 2551005857. The next prime is 2551005869. The reversal of 2551005867 is 7685001552.

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

It is not a de Polignac number, because 2551005867 - 2⁶ = 2551005803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551005869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425167642 + ... + 425167647.

It is an arithmetic number, because the mean of its divisors is an integer number (850335290).

Almost surely, 2^2551005867 is an apocalyptic number.

2551005867 is a deficient number, since it is larger than the sum of its proper divisors (850335293).

2551005867 is an equidigital number, since it uses as much as digits as its factorization.

2551005867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850335292.

The product of its (nonzero) digits is 84000, while the sum is 39.

The square root of 2551005867 is about 50507.4832772333. The cubic root of 2551005867 is about 1366.3768200782.

The spelling of 2551005867 in words is "two billion, five hundred fifty-one million, five thousand, eight hundred sixty-seven".