63136261 has 2 divisors, whose sum is σ = 63136262. Its totient is φ = 63136260.

The previous prime is 63136237. The next prime is 63136267. The reversal of 63136261 is 16263136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48650625 + 14485636 = 6975^2 + 3806^2 .

It is a cyclic number.

It is not a de Polignac number, because 63136261 - 2⁹ = 63135749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63136267) 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, 31568130 + 31568131.

It is an arithmetic number, because the mean of its divisors is an integer number (31568131).

Almost surely, 2^63136261 is an apocalyptic number.

It is an amenable number.

63136261 is a deficient number, since it is larger than the sum of its proper divisors (1).

63136261 is an equidigital number, since it uses as much as digits as its factorization.

63136261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 63136261 is about 7945.8329330537. The cubic root of 63136261 is about 398.1923873965.

Adding to 63136261 its reverse (16263136), we get a palindrome (79399397).

The spelling of 63136261 in words is "sixty-three million, one hundred thirty-six thousand, two hundred sixty-one".