63221047 has 2 divisors, whose sum is σ = 63221048. Its totient is φ = 63221046.

The previous prime is 63221033. The next prime is 63221099. The reversal of 63221047 is 74012236.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63221047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63221647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31610523 + 31610524.

It is an arithmetic number, because the mean of its divisors is an integer number (31610524).

Almost surely, 2^63221047 is an apocalyptic number.

63221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

63221047 is an equidigital number, since it uses as much as digits as its factorization.

63221047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 63221047 is about 7951.1663924232. The cubic root of 63221047 is about 398.3705525155.

The spelling of 63221047 in words is "sixty-three million, two hundred twenty-one thousand, forty-seven".