20650153 has 2 divisors, whose sum is σ = 20650154. Its totient is φ = 20650152.

The previous prime is 20650141. The next prime is 20650163. The reversal of 20650153 is 35105602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13638249 + 7011904 = 3693^2 + 2648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20650153 is a prime.

It is not a weakly prime, because it can be changed into another prime (20650163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10325076 + 10325077.

It is an arithmetic number, because the mean of its divisors is an integer number (10325077).

Almost surely, 2^20650153 is an apocalyptic number.

It is an amenable number.

20650153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20650153 is an equidigital number, since it uses as much as digits as its factorization.

20650153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 20650153 is about 4544.2439415155. The cubic root of 20650153 is about 274.3517646276.

Adding to 20650153 its reverse (35105602), we get a palindrome (55755755).

The spelling of 20650153 in words is "twenty million, six hundred fifty thousand, one hundred fifty-three".