20752141 has 6 divisors (see below), whose sum is σ = 21694190. Its totient is φ = 19849368.

The previous prime is 20752133. The next prime is 20752159. The reversal of 20752141 is 14125702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20738916 + 13225 = 4554^2 + 115^2 .

It is not a de Polignac number, because 20752141 - 2³ = 20752133 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 (20752441) 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 5 ways as a sum of consecutive naturals, for example, 19086 + ... + 20143.

Almost surely, 2^20752141 is an apocalyptic number.

It is an amenable number.

20752141 is a deficient number, since it is larger than the sum of its proper divisors (942049).

20752141 is an equidigital number, since it uses as much as digits as its factorization.

20752141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39275 (or 39252 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 20752141 is about 4555.4517887911. The cubic root of 20752141 is about 274.8026838012.

Adding to 20752141 its reverse (14125702), we get a palindrome (34877843).

The spelling of 20752141 in words is "twenty million, seven hundred fifty-two thousand, one hundred forty-one".