20522671 has 8 divisors (see below), whose sum is σ = 22215200. Its totient is φ = 18846432.

The previous prime is 20522669. The next prime is 20522681. The reversal of 20522671 is 17622502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20522671 - 2¹ = 20522669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (2776900).

Almost surely, 2^20522671 is an apocalyptic number.

20522671 is a deficient number, since it is larger than the sum of its proper divisors (1692529).

20522671 is a wasteful number, since it uses less digits than its factorization.

20522671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8145.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20522671 is about 4530.1954703964. The cubic root of 20522671 is about 273.7860362754.

The spelling of 20522671 in words is "twenty million, five hundred twenty-two thousand, six hundred seventy-one".