22552661 has 4 divisors (see below), whose sum is σ = 22587852. Its totient is φ = 22517472.

The previous prime is 22552657. The next prime is 22552679. The reversal of 22552661 is 16625522.

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 4490161 + 18062500 = 2119^2 + 4250^2 .

It is a cyclic number.

It is not a de Polignac number, because 22552661 - 2² = 22552657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22552631) 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, 16616 + ... + 17921.

It is an arithmetic number, because the mean of its divisors is an integer number (5646963).

Almost surely, 2^22552661 is an apocalyptic number.

It is an amenable number.

22552661 is a deficient number, since it is larger than the sum of its proper divisors (35191).

22552661 is an equidigital number, since it uses as much as digits as its factorization.

22552661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35190.

The product of its digits is 7200, while the sum is 29.

The square root of 22552661 is about 4748.9642028552. The cubic root of 22552661 is about 282.5308854947.

The spelling of 22552661 in words is "twenty-two million, five hundred fifty-two thousand, six hundred sixty-one".