20753207 has 2 divisors, whose sum is σ = 20753208. Its totient is φ = 20753206.

The previous prime is 20753203. The next prime is 20753251. The reversal of 20753207 is 70235702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20753207 - 2² = 20753203 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 (20753203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10376603 + 10376604.

It is an arithmetic number, because the mean of its divisors is an integer number (10376604).

Almost surely, 2^20753207 is an apocalyptic number.

20753207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20753207 is an equidigital number, since it uses as much as digits as its factorization.

20753207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 20753207 is about 4555.5687899537. The cubic root of 20753207 is about 274.8073890931.

Adding to 20753207 its reverse (70235702), we get a palindrome (90988909).

The spelling of 20753207 in words is "twenty million, seven hundred fifty-three thousand, two hundred seven".