20207153 has 2 divisors, whose sum is σ = 20207154. Its totient is φ = 20207152.

The previous prime is 20207149. The next prime is 20207191. The reversal of 20207153 is 35170202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20133169 + 73984 = 4487^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 20207153 - 2² = 20207149 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20207123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10103576 + 10103577.

It is an arithmetic number, because the mean of its divisors is an integer number (10103577).

Almost surely, 2^20207153 is an apocalyptic number.

It is an amenable number.

20207153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20207153 is an equidigital number, since it uses as much as digits as its factorization.

20207153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 20207153 is about 4495.2367012205. The cubic root of 20207153 is about 272.3757107913.

Adding to 20207153 its reverse (35170202), we get a palindrome (55377355).

The spelling of 20207153 in words is "twenty million, two hundred seven thousand, one hundred fifty-three".