20552271 has 16 divisors (see below), whose sum is σ = 29583360. Its totient is φ = 12652640.

The previous prime is 20552249. The next prime is 20552291. The reversal of 20552271 is 17225502.

It is a cyclic number.

It is not a de Polignac number, because 20552271 - 2⁷ = 20552143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3135 + ... + 7136.

It is an arithmetic number, because the mean of its divisors is an integer number (1848960).

Almost surely, 2^20552271 is an apocalyptic number.

20552271 is a deficient number, since it is larger than the sum of its proper divisors (9031089).

20552271 is a wasteful number, since it uses less digits than its factorization.

20552271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 20552271 is about 4533.4612604499. The cubic root of 20552271 is about 273.9176009177.

Adding to 20552271 its reverse (17225502), we get a palindrome (37777773).

The spelling of 20552271 in words is "twenty million, five hundred fifty-two thousand, two hundred seventy-one".