2560553 has 4 divisors (see below), whose sum is σ = 2565828. Its totient is φ = 2555280.

The previous prime is 2560549. The next prime is 2560583. The reversal of 2560553 is 3550652.

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 719104 + 1841449 = 848^2 + 1357^2 .

It is a cyclic number.

It is not a de Polignac number, because 2560553 - 2² = 2560549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1826 + ... + 2907.

It is an arithmetic number, because the mean of its divisors is an integer number (641457).

2^2560553 is an apocalyptic number.

It is an amenable number.

2560553 is a deficient number, since it is larger than the sum of its proper divisors (5275).

2560553 is an equidigital number, since it uses as much as digits as its factorization.

2560553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274.

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

The square root of 2560553 is about 1600.1728031685. The cubic root of 2560553 is about 136.8079251989.

Subtracting 2560553 from its reverse (3550652), we obtain a palindrome (990099).

It can be divided in two parts, 2560 and 553, that added together give a palindrome (3113).

The spelling of 2560553 in words is "two million, five hundred sixty thousand, five hundred fifty-three".