22550559 has 4 divisors (see below), whose sum is σ = 30067416. Its totient is φ = 15033704.

The previous prime is 22550537. The next prime is 22550579. The reversal of 22550559 is 95505522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22550559 - 2⁵ = 22550527 is a prime.

It is a super-2 number, since 2×22550559² = 1017055422424962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550509) 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, 3758424 + ... + 3758429.

It is an arithmetic number, because the mean of its divisors is an integer number (7516854).

Almost surely, 2^22550559 is an apocalyptic number.

22550559 is a deficient number, since it is larger than the sum of its proper divisors (7516857).

22550559 is an equidigital number, since it uses as much as digits as its factorization.

22550559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7516856.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 22550559 is about 4748.7428862805. The cubic root of 22550559 is about 282.5221075450.

The spelling of 22550559 in words is "twenty-two million, five hundred fifty thousand, five hundred fifty-nine".