2564231 has 4 divisors (see below), whose sum is σ = 2575200. Its totient is φ = 2553264.

The previous prime is 2564207. The next prime is 2564249. The reversal of 2564231 is 1324652.

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 2564231 - 2¹⁰ = 2563207 is a prime.

It is a super-2 number, since 2×2564231² = 13150561242722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2564197 and 2564206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564251) 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, 5126 + ... + 5603.

It is an arithmetic number, because the mean of its divisors is an integer number (643800).

2^2564231 is an apocalyptic number.

2564231 is a deficient number, since it is larger than the sum of its proper divisors (10969).

2564231 is a wasteful number, since it uses less digits than its factorization.

2564231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10968.

The product of its digits is 1440, while the sum is 23.

The square root of 2564231 is about 1601.3216416448. The cubic root of 2564231 is about 136.8733978809.

Adding to 2564231 its reverse (1324652), we get a palindrome (3888883).

The spelling of 2564231 in words is "two million, five hundred sixty-four thousand, two hundred thirty-one".