22622561 has 4 divisors (see below), whose sum is σ = 24362772. Its totient is φ = 20882352.

The previous prime is 22622539. The next prime is 22622569. The reversal of 22622561 is 16522622.

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 3534400 + 19088161 = 1880^2 + 4369^2 .

It is a cyclic number.

It is not a de Polignac number, because 22622561 - 2⁶ = 22622497 is a prime.

It is a super-3 number, since 3×22622561³ (a number of 23 digits) contains 333 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 22622561.

It is not an unprimeable number, because it can be changed into a prime (22622569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870086 + ... + 870111.

It is an arithmetic number, because the mean of its divisors is an integer number (6090693).

Almost surely, 2^22622561 is an apocalyptic number.

It is an amenable number.

22622561 is a deficient number, since it is larger than the sum of its proper divisors (1740211).

22622561 is a wasteful number, since it uses less digits than its factorization.

22622561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740210.

The product of its digits is 2880, while the sum is 26.

The square root of 22622561 is about 4756.3180087122. The cubic root of 22622561 is about 282.8224777022.

The spelling of 22622561 in words is "twenty-two million, six hundred twenty-two thousand, five hundred sixty-one".