63623251 has 2 divisors, whose sum is σ = 63623252. Its totient is φ = 63623250.

The previous prime is 63623249. The next prime is 63623257. The reversal of 63623251 is 15232636.

63623251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63623251 - 2¹ = 63623249 is a prime.

Together with 63623249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63623257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31811625 + 31811626.

It is an arithmetic number, because the mean of its divisors is an integer number (31811626).

Almost surely, 2^63623251 is an apocalyptic number.

63623251 is a deficient number, since it is larger than the sum of its proper divisors (1).

63623251 is an equidigital number, since it uses as much as digits as its factorization.

63623251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 63623251 is about 7976.4184318527. The cubic root of 63623251 is about 399.2135610478.

Adding to 63623251 its reverse (15232636), we get a palindrome (78855887).

The spelling of 63623251 in words is "sixty-three million, six hundred twenty-three thousand, two hundred fifty-one".