7048721 has 2 divisors, whose sum is σ = 7048722. Its totient is φ = 7048720.

The previous prime is 7048709. The next prime is 7048729. The reversal of 7048721 is 1278407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6558721 + 490000 = 2561^2 + 700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7048721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7048729) 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, 3524360 + 3524361.

It is an arithmetic number, because the mean of its divisors is an integer number (3524361).

Almost surely, 2^7048721 is an apocalyptic number.

It is an amenable number.

7048721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7048721 is an equidigital number, since it uses as much as digits as its factorization.

7048721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 7048721 is about 2654.9427489119. The cubic root of 7048721 is about 191.7359017255.

The spelling of 7048721 in words is "seven million, forty-eight thousand, seven hundred twenty-one".