22565051 has 4 divisors (see below), whose sum is σ = 22575000. Its totient is φ = 22555104.

The previous prime is 22565041. The next prime is 22565107. The reversal of 22565051 is 15056522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22565051 is a prime.

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 22565051.

It is not an unprimeable number, because it can be changed into a prime (22565021) 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, 275 + ... + 6723.

It is an arithmetic number, because the mean of its divisors is an integer number (5643750).

Almost surely, 2^22565051 is an apocalyptic number.

22565051 is a deficient number, since it is larger than the sum of its proper divisors (9949).

22565051 is an equidigital number, since it uses as much as digits as its factorization.

22565051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9948.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 22565051 is about 4750.2685187261. The cubic root of 22565051 is about 282.5826150418.

The spelling of 22565051 in words is "twenty-two million, five hundred sixty-five thousand, fifty-one".