2551189 has 4 divisors (see below), whose sum is σ = 2554624. Its totient is φ = 2547756.

The previous prime is 2551177. The next prime is 2551223. The reversal of 2551189 is 9811552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2551189 - 2¹⁵ = 2518421 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 2551189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551169) 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, 87 + ... + 2260.

It is an arithmetic number, because the mean of its divisors is an integer number (638656).

2^2551189 is an apocalyptic number.

It is an amenable number.

2551189 is a deficient number, since it is larger than the sum of its proper divisors (3435).

2551189 is a wasteful number, since it uses less digits than its factorization.

2551189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434.

The product of its digits is 3600, while the sum is 31.

The square root of 2551189 is about 1597.2441892209. The cubic root of 2551189 is about 136.6409516031.

It can be divided in two parts, 25511 and 89, that added together give a square (25600 = 160²).

The spelling of 2551189 in words is "two million, five hundred fifty-one thousand, one hundred eighty-nine".