20536045 has 8 divisors (see below), whose sum is σ = 24672024. Its totient is φ = 16409664.

The previous prime is 20536013. The next prime is 20536057. The reversal of 20536045 is 54063502.

It can be written as a sum of positive squares in 4 ways, for example, as 769129 + 19766916 = 877^2 + 4446^2 .

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 20536045 - 2⁵ = 20536013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3747 + ... + 7423.

It is an arithmetic number, because the mean of its divisors is an integer number (3084003).

Almost surely, 2^20536045 is an apocalyptic number.

It is an amenable number.

20536045 is a deficient number, since it is larger than the sum of its proper divisors (4135979).

20536045 is a wasteful number, since it uses less digits than its factorization.

20536045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4799.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20536045 is about 4531.6713252397. The cubic root of 20536045 is about 273.8454960366.

Adding to 20536045 its reverse (54063502), we get a palindrome (74599547).

The spelling of 20536045 in words is "twenty million, five hundred thirty-six thousand, forty-five".