2550565 has 8 divisors (see below), whose sum is σ = 3072888. Its totient is φ = 2032320.

The previous prime is 2550563. The next prime is 2550577. The reversal of 2550565 is 5650552.

It can be written as a sum of positive squares in 4 ways, for example, as 123201 + 2427364 = 351^2 + 1558^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2550565 - 2¹ = 2550563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (384111).

2^2550565 is an apocalyptic number.

It is an amenable number.

2550565 is a deficient number, since it is larger than the sum of its proper divisors (522323).

2550565 is a wasteful number, since it uses less digits than its factorization.

2550565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 2550565 is about 1597.0488408311. The cubic root of 2550565 is about 136.6298102743.

The spelling of 2550565 in words is "two million, five hundred fifty thousand, five hundred sixty-five".