2550365 has 4 divisors (see below), whose sum is σ = 3060444. Its totient is φ = 2040288.

The previous prime is 2550343. The next prime is 2550367. The reversal of 2550365 is 5630552.

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 643204 + 1907161 = 802^2 + 1381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2550365 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 (2550367) 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, 255032 + ... + 255041.

It is an arithmetic number, because the mean of its divisors is an integer number (765111).

2^2550365 is an apocalyptic number.

It is an amenable number.

2550365 is a deficient number, since it is larger than the sum of its proper divisors (510079).

2550365 is an equidigital number, since it uses as much as digits as its factorization.

2550365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510078.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 2550365 is about 1596.9862241109. The cubic root of 2550365 is about 136.6262389510.

The spelling of 2550365 in words is "two million, five hundred fifty thousand, three hundred sixty-five".