10047721 has 2 divisors, whose sum is σ = 10047722. Its totient is φ = 10047720.

The previous prime is 10047703. The next prime is 10047727. The reversal of 10047721 is 12774001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7371225 + 2676496 = 2715^2 + 1636^2 .

It is a cyclic number.

It is not a de Polignac number, because 10047721 - 2⁷ = 10047593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10047692 and 10047701.

It is not a weakly prime, because it can be changed into another prime (10047727) 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, 5023860 + 5023861.

It is an arithmetic number, because the mean of its divisors is an integer number (5023861).

Almost surely, 2^10047721 is an apocalyptic number.

It is an amenable number.

10047721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10047721 is an equidigital number, since it uses as much as digits as its factorization.

10047721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 10047721 is about 3169.8140324000. The cubic root of 10047721 is about 215.7856312277.

The spelling of 10047721 in words is "ten million, forty-seven thousand, seven hundred twenty-one".