20535045 has 16 divisors (see below), whose sum is σ = 33989760. Its totient is φ = 10574144.

The previous prime is 20535043. The next prime is 20535049. The reversal of 20535045 is 54053502.

It is a cyclic number.

It is not a de Polignac number, because 20535045 - 2¹ = 20535043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535043) 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, 23169 + ... + 24038.

It is an arithmetic number, because the mean of its divisors is an integer number (2124360).

Almost surely, 2^20535045 is an apocalyptic number.

It is an amenable number.

20535045 is a deficient number, since it is larger than the sum of its proper divisors (13454715).

20535045 is a wasteful number, since it uses less digits than its factorization.

20535045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47244.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 20535045 is about 4531.5609893281. The cubic root of 20535045 is about 273.8410510077.

Adding to 20535045 its reverse (54053502), we get a palindrome (74588547).

The spelling of 20535045 in words is "twenty million, five hundred thirty-five thousand, forty-five".