22018055 has 16 divisors (see below), whose sum is σ = 28343520. Its totient is φ = 16368768.

The previous prime is 22018049. The next prime is 22018063. The reversal of 22018055 is 55081022.

It is a cyclic number.

It is not a de Polignac number, because 22018055 - 2⁴ = 22018039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22018055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2849 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (1771470).

Almost surely, 2^22018055 is an apocalyptic number.

22018055 is a deficient number, since it is larger than the sum of its proper divisors (6325465).

22018055 is a wasteful number, since it uses less digits than its factorization.

22018055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 22018055 is about 4692.3400345670. The cubic root of 22018055 is about 280.2805648637.

Adding to 22018055 its reverse (55081022), we get a palindrome (77099077).

The spelling of 22018055 in words is "twenty-two million, eighteen thousand, fifty-five".