20601233 has 2 divisors, whose sum is σ = 20601234. Its totient is φ = 20601232.

The previous prime is 20601211. The next prime is 20601241. The reversal of 20601233 is 33210602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18593344 + 2007889 = 4312^2 + 1417^2 .

It is a cyclic number.

It is not a de Polignac number, because 20601233 - 2⁸ = 20600977 is a prime.

It is a super-2 number, since 2×20601233² = 848821602240578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20601283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10300616 + 10300617.

It is an arithmetic number, because the mean of its divisors is an integer number (10300617).

Almost surely, 2^20601233 is an apocalyptic number.

It is an amenable number.

20601233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20601233 is an equidigital number, since it uses as much as digits as its factorization.

20601233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20601233 is about 4538.8581163108. The cubic root of 20601233 is about 274.1349478225.

Adding to 20601233 its reverse (33210602), we get a palindrome (53811835).

The spelling of 20601233 in words is "twenty million, six hundred one thousand, two hundred thirty-three".