22055511 has 16 divisors (see below), whose sum is σ = 31580928. Its totient is φ = 13641600.

The previous prime is 22055503. The next prime is 22055521. The reversal of 22055511 is 11555022.

It is not a de Polignac number, because 22055511 - 2³ = 22055503 is a prime.

It is a super-2 number, since 2×22055511² = 972891130942242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22055521) 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 15 ways as a sum of consecutive naturals, for example, 576 + ... + 6666.

It is an arithmetic number, because the mean of its divisors is an integer number (1973808).

Almost surely, 2^22055511 is an apocalyptic number.

22055511 is a deficient number, since it is larger than the sum of its proper divisors (9525417).

22055511 is a wasteful number, since it uses less digits than its factorization.

22055511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 22055511 is about 4696.3295242136. The cubic root of 22055511 is about 280.4394078596.

The spelling of 22055511 in words is "twenty-two million, fifty-five thousand, five hundred eleven".