2563567 has 4 divisors (see below), whose sum is σ = 2588560. Its totient is φ = 2538576.

The previous prime is 2563553. The next prime is 2563601. The reversal of 2563567 is 7653652.

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 2563567 - 2¹⁵ = 2530799 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 (2563507) 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, 12342 + ... + 12547.

It is an arithmetic number, because the mean of its divisors is an integer number (647140).

2^2563567 is an apocalyptic number.

2563567 is a deficient number, since it is larger than the sum of its proper divisors (24993).

2563567 is a wasteful number, since it uses less digits than its factorization.

2563567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24992.

The product of its digits is 37800, while the sum is 34.

The square root of 2563567 is about 1601.1142994802. The cubic root of 2563567 is about 136.8615825411.

The spelling of 2563567 in words is "two million, five hundred sixty-three thousand, five hundred sixty-seven".