633121241 has 2 divisors, whose sum is σ = 633121242. Its totient is φ = 633121240.

The previous prime is 633121217. The next prime is 633121273. The reversal of 633121241 is 142121336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450330841 + 182790400 = 21221^2 + 13520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-633121241 is a prime.

It is not a weakly prime, because it can be changed into another prime (633121141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316560620 + 316560621.

It is an arithmetic number, because the mean of its divisors is an integer number (316560621).

Almost surely, 2^633121241 is an apocalyptic number.

It is an amenable number.

633121241 is a deficient number, since it is larger than the sum of its proper divisors (1).

633121241 is an equidigital number, since it uses as much as digits as its factorization.

633121241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 633121241 is about 25161.9005840179. The cubic root of 633121241 is about 858.6752820174.

Adding to 633121241 its reverse (142121336), we get a palindrome (775242577).

It can be divided in two parts, 6331 and 21241, that added together give a palindrome (27572).

The spelling of 633121241 in words is "six hundred thirty-three million, one hundred twenty-one thousand, two hundred forty-one".