63243251 has 2 divisors, whose sum is σ = 63243252. Its totient is φ = 63243250.

The previous prime is 63243227. The next prime is 63243259. The reversal of 63243251 is 15234236.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63243251 - 2²² = 59048947 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63243251.

It is not a weakly prime, because it can be changed into another prime (63243259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31621625 + 31621626.

It is an arithmetic number, because the mean of its divisors is an integer number (31621626).

Almost surely, 2^63243251 is an apocalyptic number.

63243251 is a deficient number, since it is larger than the sum of its proper divisors (1).

63243251 is an equidigital number, since it uses as much as digits as its factorization.

63243251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 63243251 is about 7952.5625429795. The cubic root of 63243251 is about 398.4171845830.

Adding to 63243251 its reverse (15234236), we get a palindrome (78477487).

The spelling of 63243251 in words is "sixty-three million, two hundred forty-three thousand, two hundred fifty-one".