2553563 has 4 divisors (see below), whose sum is σ = 2635968. Its totient is φ = 2471160.

The previous prime is 2553559. The next prime is 2553599. The reversal of 2553563 is 3653552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2553563 - 2² = 2553559 is a prime.

It is a d-powerful number, because it can be written as 2 + 5⁴ + 5⁸ + 3¹¹ + 5⁸ + 6³ + 3¹³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2553503) 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, 41156 + ... + 41217.

It is an arithmetic number, because the mean of its divisors is an integer number (658992).

2^2553563 is an apocalyptic number.

2553563 is a deficient number, since it is larger than the sum of its proper divisors (82405).

2553563 is an equidigital number, since it uses as much as digits as its factorization.

2553563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82404.

The product of its digits is 13500, while the sum is 29.

The square root of 2553563 is about 1597.9871714128. The cubic root of 2553563 is about 136.6833220497.

The spelling of 2553563 in words is "two million, five hundred fifty-three thousand, five hundred sixty-three".