2552689 has 4 divisors (see below), whose sum is σ = 2557156. Its totient is φ = 2548224.

The previous prime is 2552687. The next prime is 2552713. The reversal of 2552689 is 9862552.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 640000 + 1912689 = 800^2 + 1383^2 .

It is a cyclic number.

It is not a de Polignac number, because 2552689 - 2¹ = 2552687 is a prime.

It is a super-2 number, since 2×2552689² = 13032442261442, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2 + 5⁸ + 5⁸ + 2² + 6⁸ + 8⁵ + 9⁵ .

It is a Duffinian number.

2552689 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2552687) 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, 1224 + ... + 2569.

It is an arithmetic number, because the mean of its divisors is an integer number (639289).

2^2552689 is an apocalyptic number.

It is an amenable number.

2552689 is a deficient number, since it is larger than the sum of its proper divisors (4467).

2552689 is an equidigital number, since it uses as much as digits as its factorization.

2552689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466.

The product of its digits is 43200, while the sum is 37.

The square root of 2552689 is about 1597.7136789801. The cubic root of 2552689 is about 136.6677262130.

The spelling of 2552689 in words is "two million, five hundred fifty-two thousand, six hundred eighty-nine".