2563853 has 4 divisors (see below), whose sum is σ = 2626428. Its totient is φ = 2501280.

The previous prime is 2563849. The next prime is 2563859. The reversal of 2563853 is 3583652.

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 917764 + 1646089 = 958^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 2563853 - 2² = 2563849 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 (2563859) 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, 31226 + ... + 31307.

It is an arithmetic number, because the mean of its divisors is an integer number (656607).

2^2563853 is an apocalyptic number.

It is an amenable number.

2563853 is a deficient number, since it is larger than the sum of its proper divisors (62575).

2563853 is an equidigital number, since it uses as much as digits as its factorization.

2563853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62574.

The product of its digits is 21600, while the sum is 32.

The square root of 2563853 is about 1601.2036097886. The cubic root of 2563853 is about 136.8666719285.

The spelling of 2563853 in words is "two million, five hundred sixty-three thousand, eight hundred fifty-three".