20116583 has 4 divisors (see below), whose sum is σ = 20221008. Its totient is φ = 20012160.

The previous prime is 20116543. The next prime is 20116619. The reversal of 20116583 is 38561102.

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

It is a cyclic number.

It is not a de Polignac number, because 20116583 - 2¹⁶ = 20051047 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 (20116543) 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, 51923 + ... + 52308.

It is an arithmetic number, because the mean of its divisors is an integer number (5055252).

Almost surely, 2^20116583 is an apocalyptic number.

20116583 is a deficient number, since it is larger than the sum of its proper divisors (104425).

20116583 is a wasteful number, since it uses less digits than its factorization.

20116583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104424.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 20116583 is about 4485.1513909789. The cubic root of 20116583 is about 271.9681650674.

Adding to 20116583 its reverse (38561102), we get a palindrome (58677685).

The spelling of 20116583 in words is "twenty million, one hundred sixteen thousand, five hundred eighty-three".