2551505087 has 4 divisors (see below), whose sum is σ = 2552293176. Its totient is φ = 2550717000.

The previous prime is 2551505039. The next prime is 2551505093. The reversal of 2551505087 is 7805051552.

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 2551505087 - 2¹⁰ = 2551504063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2551505087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551505287) 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, 389168 + ... + 395669.

It is an arithmetic number, because the mean of its divisors is an integer number (638073294).

Almost surely, 2^2551505087 is an apocalyptic number.

2551505087 is a deficient number, since it is larger than the sum of its proper divisors (788089).

2551505087 is an equidigital number, since it uses as much as digits as its factorization.

2551505087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788088.

The product of its (nonzero) digits is 70000, while the sum is 38.

The square root of 2551505087 is about 50512.4250754208. The cubic root of 2551505087 is about 1366.4659454639.

The spelling of 2551505087 in words is "two billion, five hundred fifty-one million, five hundred five thousand, eighty-seven".