20534207 has 2 divisors, whose sum is σ = 20534208. Its totient is φ = 20534206.

The previous prime is 20534179. The next prime is 20534237. The reversal of 20534207 is 70243502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20534207 - 2¹⁴ = 20517823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20534237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267103 + 10267104.

It is an arithmetic number, because the mean of its divisors is an integer number (10267104).

Almost surely, 2^20534207 is an apocalyptic number.

20534207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20534207 is an equidigital number, since it uses as much as digits as its factorization.

20534207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20534207 is about 4531.4685257651. The cubic root of 20534207 is about 273.8373259624.

Adding to 20534207 its reverse (70243502), we get a palindrome (90777709).

The spelling of 20534207 in words is "twenty million, five hundred thirty-four thousand, two hundred seven".