20526163 has 4 divisors (see below), whose sum is σ = 23458480. Its totient is φ = 17593848.

The previous prime is 20526161. The next prime is 20526167. The reversal of 20526163 is 36162502.

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 20526163 - 2¹ = 20526161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20526161) 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, 1466148 + ... + 1466161.

It is an arithmetic number, because the mean of its divisors is an integer number (5864620).

Almost surely, 2^20526163 is an apocalyptic number.

20526163 is a deficient number, since it is larger than the sum of its proper divisors (2932317).

20526163 is an equidigital number, since it uses as much as digits as its factorization.

20526163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932316.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20526163 is about 4530.5808678358. The cubic root of 20526163 is about 273.8015639264.

Adding to 20526163 its reverse (36162502), we get a palindrome (56688665).

The spelling of 20526163 in words is "twenty million, five hundred twenty-six thousand, one hundred sixty-three".