20522441 has 4 divisors (see below), whose sum is σ = 20721792. Its totient is φ = 20323092.

The previous prime is 20522429. The next prime is 20522449. The reversal of 20522441 is 14422502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20522441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20522449) 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, 99521 + ... + 99726.

It is an arithmetic number, because the mean of its divisors is an integer number (5180448).

Almost surely, 2^20522441 is an apocalyptic number.

It is an amenable number.

20522441 is a deficient number, since it is larger than the sum of its proper divisors (199351).

20522441 is a wasteful number, since it uses less digits than its factorization.

20522441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199350.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20522441 is about 4530.1700851072. The cubic root of 20522441 is about 273.7850134875.

Adding to 20522441 its reverse (14422502), we get a palindrome (34944943).

The spelling of 20522441 in words is "twenty million, five hundred twenty-two thousand, four hundred forty-one".