20514163 has 4 divisors (see below), whose sum is σ = 20620648. Its totient is φ = 20407680.

The previous prime is 20514149. The next prime is 20514173. The reversal of 20514163 is 36141502.

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 20514163 - 2¹⁷ = 20383091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20514103) 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, 52953 + ... + 53338.

It is an arithmetic number, because the mean of its divisors is an integer number (5155162).

Almost surely, 2^20514163 is an apocalyptic number.

20514163 is a deficient number, since it is larger than the sum of its proper divisors (106485).

20514163 is a wasteful number, since it uses less digits than its factorization.

20514163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106484.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20514163 is about 4529.2563407253. The cubic root of 20514163 is about 273.7481969259.

Adding to 20514163 its reverse (36141502), we get a palindrome (56655665).

The spelling of 20514163 in words is "twenty million, five hundred fourteen thousand, one hundred sixty-three".