20055245 has 8 divisors (see below), whose sum is σ = 27504384. Its totient is φ = 13752144.

The previous prime is 20055239. The next prime is 20055247. The reversal of 20055245 is 54255002.

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

It is not a de Polignac number, because 20055245 - 2⁶ = 20055181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20055245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286469 + ... + 286538.

It is an arithmetic number, because the mean of its divisors is an integer number (3438048).

Almost surely, 2^20055245 is an apocalyptic number.

It is an amenable number.

20055245 is a deficient number, since it is larger than the sum of its proper divisors (7449139).

20055245 is an equidigital number, since it uses as much as digits as its factorization.

20055245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573019.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 20055245 is about 4478.3082743375. The cubic root of 20055245 is about 271.6914618910.

The spelling of 20055245 in words is "twenty million, fifty-five thousand, two hundred forty-five".