20050655 has 4 divisors (see below), whose sum is σ = 24060792. Its totient is φ = 16040520.

The previous prime is 20050651. The next prime is 20050661. The reversal of 20050655 is 55605002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20050655 - 2² = 20050651 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 20050655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005061 + ... + 2005070.

It is an arithmetic number, because the mean of its divisors is an integer number (6015198).

Almost surely, 2^20050655 is an apocalyptic number.

20050655 is a deficient number, since it is larger than the sum of its proper divisors (4010137).

20050655 is an equidigital number, since it uses as much as digits as its factorization.

20050655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010136.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 20050655 is about 4477.7957747088. The cubic root of 20050655 is about 271.6707331662.

Adding to 20050655 its reverse (55605002), we get a palindrome (75655657).

The spelling of 20050655 in words is "twenty million, fifty thousand, six hundred fifty-five".