2566331 has 4 divisors (see below), whose sum is σ = 2608464. Its totient is φ = 2524200.

The previous prime is 2566327. The next prime is 2566339. The reversal of 2566331 is 1336652.

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 2566331 - 2² = 2566327 is a prime.

It is a super-2 number, since 2×2566331² = 13172109603122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2566331.

It is not an unprimeable number, because it can be changed into a prime (2566339) 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, 20975 + ... + 21096.

It is an arithmetic number, because the mean of its divisors is an integer number (652116).

2^2566331 is an apocalyptic number.

2566331 is a deficient number, since it is larger than the sum of its proper divisors (42133).

2566331 is an equidigital number, since it uses as much as digits as its factorization.

2566331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42132.

The product of its digits is 3240, while the sum is 26.

The square root of 2566331 is about 1601.9772158180. The cubic root of 2566331 is about 136.9107522516.

The spelling of 2566331 in words is "two million, five hundred sixty-six thousand, three hundred thirty-one".