20124653 has 2 divisors, whose sum is σ = 20124654. Its totient is φ = 20124652.

The previous prime is 20124649. The next prime is 20124661. The reversal of 20124653 is 35642102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16176484 + 3948169 = 4022^2 + 1987^2 .

It is a cyclic number.

It is not a de Polignac number, because 20124653 - 2² = 20124649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062326 + 10062327.

It is an arithmetic number, because the mean of its divisors is an integer number (10062327).

Almost surely, 2^20124653 is an apocalyptic number.

It is an amenable number.

20124653 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124653 is an equidigital number, since it uses as much as digits as its factorization.

20124653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20124653 is about 4486.0509359569. The cubic root of 20124653 is about 272.0045279307.

Adding to 20124653 its reverse (35642102), we get a palindrome (55766755).

The spelling of 20124653 in words is "twenty million, one hundred twenty-four thousand, six hundred fifty-three".