20527163 has 8 divisors (see below), whose sum is σ = 21658320. Its totient is φ = 19401120.

The previous prime is 20527159. The next prime is 20527187. The reversal of 20527163 is 36172502.

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

It is a cyclic number.

It is not a de Polignac number, because 20527163 - 2² = 20527159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20527153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9281 + ... + 11277.

It is an arithmetic number, because the mean of its divisors is an integer number (2707290).

Almost surely, 2^20527163 is an apocalyptic number.

20527163 is a deficient number, since it is larger than the sum of its proper divisors (1131157).

20527163 is a wasteful number, since it uses less digits than its factorization.

20527163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 20527163 is about 4530.6912276164. The cubic root of 20527163 is about 273.8060102375.

Adding to 20527163 its reverse (36172502), we get a palindrome (56699665).

The spelling of 20527163 in words is "twenty million, five hundred twenty-seven thousand, one hundred sixty-three".