22055555 has 8 divisors (see below), whose sum is σ = 26524800. Its totient is φ = 17605696.

The previous prime is 22055531. The next prime is 22055567. The reversal of 22055555 is 55555022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22055555 - 2⁶ = 22055491 is a prime.

22055555 is a modest number, since divided by 5555 gives 2205 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210 + ... + 6999.

It is an arithmetic number, because the mean of its divisors is an integer number (3315600).

Almost surely, 2^22055555 is an apocalyptic number.

22055555 is a deficient number, since it is larger than the sum of its proper divisors (4469245).

22055555 is an equidigital number, since it uses as much as digits as its factorization.

22055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9693.

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 22055555 is about 4696.3342087207. The cubic root of 22055555 is about 280.4395943485.

It can be divided in two parts, 2205 and 5555, that multiplied together give a triangular number (12248775 = T₄₉₄₉).

The spelling of 22055555 in words is "twenty-two million, fifty-five thousand, five hundred fifty-five".