63445091 has 2 divisors, whose sum is σ = 63445092. Its totient is φ = 63445090.

The previous prime is 63445079. The next prime is 63445097. The reversal of 63445091 is 19054436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63445091 - 2⁶ = 63445027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63445097) 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, 31722545 + 31722546.

It is an arithmetic number, because the mean of its divisors is an integer number (31722546).

Almost surely, 2^63445091 is an apocalyptic number.

63445091 is a deficient number, since it is larger than the sum of its proper divisors (1).

63445091 is an equidigital number, since it uses as much as digits as its factorization.

63445091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 63445091 is about 7965.2426830574. The cubic root of 63445091 is about 398.8405822063.

The spelling of 63445091 in words is "sixty-three million, four hundred forty-five thousand, ninety-one".