20522097 has 12 divisors (see below), whose sum is σ = 29687424. Its totient is φ = 13660920.

The previous prime is 20522083. The next prime is 20522113. The reversal of 20522097 is 79022502.

It is a happy number.

It is not a de Polignac number, because 20522097 - 2⁸ = 20521841 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20522097.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6948 + ... + 9450.

It is an arithmetic number, because the mean of its divisors is an integer number (2473952).

Almost surely, 2^20522097 is an apocalyptic number.

It is an amenable number.

20522097 is a deficient number, since it is larger than the sum of its proper divisors (9165327).

20522097 is a wasteful number, since it uses less digits than its factorization.

20522097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20522097 is about 4530.1321172787. The cubic root of 20522097 is about 273.7834837381.

Adding to 20522097 its reverse (79022502), we get a palindrome (99544599).

The spelling of 20522097 in words is "twenty million, five hundred twenty-two thousand, ninety-seven".