20061522 has 24 divisors (see below), whose sum is σ = 46810764. Its totient is φ = 6172704.

The previous prime is 20061499. The next prime is 20061523. The reversal of 20061522 is 22516002.

It can be written as a sum of positive squares in 2 ways, for example, as 20061441 + 81 = 4479^2 + 9^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20061495 and 20061504.

It is not an unprimeable number, because it can be changed into a prime (20061523) 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, 42633 + ... + 43100.

Almost surely, 2^20061522 is an apocalyptic number.

20061522 is an abundant number, since it is smaller than the sum of its proper divisors (26749242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20061522 is a wasteful number, since it uses less digits than its factorization.

20061522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85754 (or 85751 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20061522 is about 4479.0090421878. The cubic root of 20061522 is about 271.7198040930.

Adding to 20061522 its reverse (22516002), we get a palindrome (42577524).

The spelling of 20061522 in words is "twenty million, sixty-one thousand, five hundred twenty-two".