20535283 has 2 divisors, whose sum is σ = 20535284. Its totient is φ = 20535282.

The previous prime is 20535271. The next prime is 20535289. The reversal of 20535283 is 38253502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20535283 is a prime.

It is not a weakly prime, because it can be changed into another prime (20535289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267641 + 10267642.

It is an arithmetic number, because the mean of its divisors is an integer number (10267642).

Almost surely, 2^20535283 is an apocalyptic number.

20535283 is a deficient number, since it is larger than the sum of its proper divisors (1).

20535283 is an equidigital number, since it uses as much as digits as its factorization.

20535283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 20535283 is about 4531.5872495186. The cubic root of 20535283 is about 273.8421089377.

Adding to 20535283 its reverse (38253502), we get a palindrome (58788785).

The spelling of 20535283 in words is "twenty million, five hundred thirty-five thousand, two hundred eighty-three".