22566261 has 8 divisors (see below), whose sum is σ = 30598560. Its totient is φ = 14789072.

The previous prime is 22566241. The next prime is 22566301. The reversal of 22566261 is 16266522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22566261 - 2⁷ = 22566133 is a prime.

It is a super-2 number, since 2×22566261² = 1018472271040242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22566221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63570 + ... + 63923.

It is an arithmetic number, because the mean of its divisors is an integer number (3824820).

Almost surely, 2^22566261 is an apocalyptic number.

It is an amenable number.

22566261 is a deficient number, since it is larger than the sum of its proper divisors (8032299).

22566261 is a wasteful number, since it uses less digits than its factorization.

22566261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127555.

The product of its digits is 8640, while the sum is 30.

The square root of 22566261 is about 4750.3958782400. The cubic root of 22566261 is about 282.5876659035.

The spelling of 22566261 in words is "twenty-two million, five hundred sixty-six thousand, two hundred sixty-one".