2551887 has 24 divisors (see below), whose sum is σ = 4206384. Its totient is φ = 1476864.

The previous prime is 2551883. The next prime is 2551903. The reversal of 2551887 is 7881552.

It is not a de Polignac number, because 2551887 - 2² = 2551883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1348 + ... + 2630.

It is an arithmetic number, because the mean of its divisors is an integer number (175266).

2^2551887 is an apocalyptic number.

2551887 is a deficient number, since it is larger than the sum of its proper divisors (1654497).

2551887 is a wasteful number, since it uses less digits than its factorization.

2551887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1316 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 2551887 is about 1597.4626756203. The cubic root of 2551887 is about 136.6534120267.

The spelling of 2551887 in words is "two million, five hundred fifty-one thousand, eight hundred eighty-seven".