73548721 has 2 divisors, whose sum is σ = 73548722. Its totient is φ = 73548720.

The previous prime is 73548703. The next prime is 73548757. The reversal of 73548721 is 12784537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52056225 + 21492496 = 7215^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 73548721 - 2⁷ = 73548593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73548421) 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, 36774360 + 36774361.

It is an arithmetic number, because the mean of its divisors is an integer number (36774361).

Almost surely, 2^73548721 is an apocalyptic number.

It is an amenable number.

73548721 is a deficient number, since it is larger than the sum of its proper divisors (1).

73548721 is an equidigital number, since it uses as much as digits as its factorization.

73548721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 73548721 is about 8576.0550954387. The cubic root of 73548721 is about 418.9784717134.

The spelling of 73548721 in words is "seventy-three million, five hundred forty-eight thousand, seven hundred twenty-one".