20654353 has 2 divisors, whose sum is σ = 20654354. Its totient is φ = 20654352.

The previous prime is 20654329. The next prime is 20654407. The reversal of 20654353 is 35345602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 3448449 = 4148^2 + 1857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20654353 is a prime.

It is equal to p_1309438 and since 20654353 and 1309438 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20654323) 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, 10327176 + 10327177.

It is an arithmetic number, because the mean of its divisors is an integer number (10327177).

Almost surely, 2^20654353 is an apocalyptic number.

It is an amenable number.

20654353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20654353 is an equidigital number, since it uses as much as digits as its factorization.

20654353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 20654353 is about 4544.7060410988. The cubic root of 20654353 is about 274.3703633486.

Adding to 20654353 its reverse (35345602), we get a palindrome (55999955).

The spelling of 20654353 in words is "twenty million, six hundred fifty-four thousand, three hundred fifty-three".