20522063 has 4 divisors (see below), whose sum is σ = 20556480. Its totient is φ = 20487648.

The previous prime is 20522059. The next prime is 20522069. The reversal of 20522063 is 36022502.

It is a happy number.

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 20522063 - 2² = 20522059 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 (20522069) 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, 16298 + ... + 17511.

It is an arithmetic number, because the mean of its divisors is an integer number (5139120).

Almost surely, 2^20522063 is an apocalyptic number.

20522063 is a deficient number, since it is larger than the sum of its proper divisors (34417).

20522063 is an equidigital number, since it uses as much as digits as its factorization.

20522063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34416.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20522063 is about 4530.1283646272. The cubic root of 20522063 is about 273.7833325411.

Adding to 20522063 its reverse (36022502), we get a palindrome (56544565).

The spelling of 20522063 in words is "twenty million, five hundred twenty-two thousand, sixty-three".