20054717 has 4 divisors (see below), whose sum is σ = 20063676. Its totient is φ = 20045760.

The previous prime is 20054711. The next prime is 20054719. The reversal of 20054717 is 71745002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8145316 + 11909401 = 2854^2 + 3451^2 .

It is a cyclic number.

It is not a de Polignac number, because 20054717 - 2⁴ = 20054701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20054711) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2117 + ... + 6677.

It is an arithmetic number, because the mean of its divisors is an integer number (5015919).

Almost surely, 2^20054717 is an apocalyptic number.

It is an amenable number.

20054717 is a deficient number, since it is larger than the sum of its proper divisors (8959).

20054717 is an equidigital number, since it uses as much as digits as its factorization.

20054717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8958.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 20054717 is about 4478.2493231172. The cubic root of 20054717 is about 271.6890775712.

Adding to 20054717 its reverse (71745002), we get a palindrome (91799719).

The spelling of 20054717 in words is "twenty million, fifty-four thousand, seven hundred seventeen".