20045153 has 4 divisors (see below), whose sum is σ = 20079108. Its totient is φ = 20011200.

The previous prime is 20045131. The next prime is 20045161. The reversal of 20045153 is 35154002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9102289 + 10942864 = 3017^2 + 3308^2 .

It is a cyclic number.

It is not a de Polignac number, because 20045153 - 2⁶ = 20045089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20045953) 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, 16076 + ... + 17277.

It is an arithmetic number, because the mean of its divisors is an integer number (5019777).

Almost surely, 2^20045153 is an apocalyptic number.

It is an amenable number.

20045153 is a deficient number, since it is larger than the sum of its proper divisors (33955).

20045153 is an equidigital number, since it uses as much as digits as its factorization.

20045153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33954.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20045153 is about 4477.1813677804. The cubic root of 20045153 is about 271.6458816237.

Adding to 20045153 its reverse (35154002), we get a palindrome (55199155).

The spelling of 20045153 in words is "twenty million, forty-five thousand, one hundred fifty-three".