63451249 has 2 divisors, whose sum is σ = 63451250. Its totient is φ = 63451248.

The previous prime is 63451247. The next prime is 63451261. The reversal of 63451249 is 94215436.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63091249 + 360000 = 7943^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 63451249 - 2¹ = 63451247 is a prime.

Together with 63451247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63451243) 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, 31725624 + 31725625.

It is an arithmetic number, because the mean of its divisors is an integer number (31725625).

Almost surely, 2^63451249 is an apocalyptic number.

It is an amenable number.

63451249 is a deficient number, since it is larger than the sum of its proper divisors (1).

63451249 is an equidigital number, since it uses as much as digits as its factorization.

63451249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 63451249 is about 7965.6292281276. The cubic root of 63451249 is about 398.8534856519.

The spelling of 63451249 in words is "sixty-three million, four hundred fifty-one thousand, two hundred forty-nine".