20522411 has 16 divisors (see below), whose sum is σ = 25502400. Its totient is φ = 16080768.

The previous prime is 20522363. The next prime is 20522419. The reversal of 20522411 is 11422502.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20522411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20522411.

It is not an unprimeable number, because it can be changed into a prime (20522419) 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 15 ways as a sum of consecutive naturals, for example, 8885 + ... + 10953.

It is an arithmetic number, because the mean of its divisors is an integer number (1593900).

Almost surely, 2^20522411 is an apocalyptic number.

20522411 is a deficient number, since it is larger than the sum of its proper divisors (4979989).

20522411 is a wasteful number, since it uses less digits than its factorization.

20522411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20522411 is about 4530.1667739720. The cubic root of 20522411 is about 273.7848800798.

Adding to 20522411 its reverse (11422502), we get a palindrome (31944913).

Subtracting from 20522411 its reverse (11422502), we obtain a palindrome (9099909).

The spelling of 20522411 in words is "twenty million, five hundred twenty-two thousand, four hundred eleven".