20522007 has 12 divisors (see below), whose sum is σ = 32337864. Its totient is φ = 12437520.

The previous prime is 20521987. The next prime is 20522023. The reversal of 20522007 is 70022502.

It is a happy number.

It is not a de Polignac number, because 20522007 - 2¹¹ = 20519959 is a prime.

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, 103548 + ... + 103745.

It is an arithmetic number, because the mean of its divisors is an integer number (2694822).

Almost surely, 2^20522007 is an apocalyptic number.

20522007 is a deficient number, since it is larger than the sum of its proper divisors (11815857).

20522007 is a wasteful number, since it uses less digits than its factorization.

20522007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207310 (or 207307 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 20522007 is about 4530.1221837827. The cubic root of 20522007 is about 273.7830835102.

Adding to 20522007 its reverse (70022502), we get a palindrome (90544509).

The spelling of 20522007 in words is "twenty million, five hundred twenty-two thousand, seven".