22552861 has 4 divisors (see below), whose sum is σ = 22563424. Its totient is φ = 22542300.

The previous prime is 22552853. The next prime is 22552909. The reversal of 22552861 is 16825522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22552861 - 2³ = 22552853 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 (22552801) 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, 825 + ... + 6766.

It is an arithmetic number, because the mean of its divisors is an integer number (5640856).

Almost surely, 2^22552861 is an apocalyptic number.

It is an amenable number.

22552861 is a deficient number, since it is larger than the sum of its proper divisors (10563).

22552861 is an equidigital number, since it uses as much as digits as its factorization.

22552861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10562.

The product of its digits is 9600, while the sum is 31.

The square root of 22552861 is about 4748.9852600319. The cubic root of 22552861 is about 282.5317206660.

The spelling of 22552861 in words is "twenty-two million, five hundred fifty-two thousand, eight hundred sixty-one".