22159455 has 16 divisors (see below), whose sum is σ = 35956224. Its totient is φ = 11651360.

The previous prime is 22159447. The next prime is 22159481. The reversal of 22159455 is 55495122.

It is not a de Polignac number, because 22159455 - 2³ = 22159447 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 9339 + ... + 11468.

It is an arithmetic number, because the mean of its divisors is an integer number (2247264).

Almost surely, 2^22159455 is an apocalyptic number.

22159455 is a deficient number, since it is larger than the sum of its proper divisors (13796769).

22159455 is a wasteful number, since it uses less digits than its factorization.

22159455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20886.

The product of its digits is 18000, while the sum is 33.

The square root of 22159455 is about 4707.3830309419. The cubic root of 22159455 is about 280.8792725309.

The spelling of 22159455 in words is "twenty-two million, one hundred fifty-nine thousand, four hundred fifty-five".