20052169 has 4 divisors (see below), whose sum is σ = 20071060. Its totient is φ = 20033280.

The previous prime is 20052167. The next prime is 20052181. The reversal of 20052169 is 96125002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96125002 = 2 ⋅48062501.

It can be written as a sum of positive squares in 2 ways, for example, as 4052169 + 16000000 = 2013^2 + 4000^2 .

It is a cyclic number.

It is not a de Polignac number, because 20052169 - 2¹ = 20052167 is a prime.

It is a super-2 number, since 2×20052169² = 804178963209122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20052161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7752 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (5017765).

Almost surely, 2^20052169 is an apocalyptic number.

It is an amenable number.

20052169 is a deficient number, since it is larger than the sum of its proper divisors (18891).

20052169 is a wasteful number, since it uses less digits than its factorization.

20052169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18890.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20052169 is about 4477.9648279101. The cubic root of 20052169 is about 271.6775708338.

The spelling of 20052169 in words is "twenty million, fifty-two thousand, one hundred sixty-nine".