20055205 has 8 divisors (see below), whose sum is σ = 24256512. Its totient is φ = 15917328.

The previous prime is 20055199. The next prime is 20055227. The reversal of 20055205 is 50255002.

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 20055205 - 2⁵ = 20055173 is a prime.

It is a super-2 number, since 2×20055205² = 804422495184050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 15157 + ... + 16426.

It is an arithmetic number, because the mean of its divisors is an integer number (3032064).

Almost surely, 2^20055205 is an apocalyptic number.

It is an amenable number.

20055205 is a deficient number, since it is larger than the sum of its proper divisors (4201307).

20055205 is a wasteful number, since it uses less digits than its factorization.

20055205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31715.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 20055205 is about 4478.3038083632. The cubic root of 20055205 is about 271.6912812622.

The spelling of 20055205 in words is "twenty million, fifty-five thousand, two hundred five".