73528397 has 2 divisors, whose sum is σ = 73528398. Its totient is φ = 73528396.

The previous prime is 73528333. The next prime is 73528487. The reversal of 73528397 is 79382537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69122596 + 4405801 = 8314^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 73528397 - 2⁶ = 73528333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73528307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36764198 + 36764199.

It is an arithmetic number, because the mean of its divisors is an integer number (36764199).

Almost surely, 2^73528397 is an apocalyptic number.

It is an amenable number.

73528397 is a deficient number, since it is larger than the sum of its proper divisors (1).

73528397 is an equidigital number, since it uses as much as digits as its factorization.

73528397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 44.

The square root of 73528397 is about 8574.8700864794. The cubic root of 73528397 is about 418.9398755157.

The spelling of 73528397 in words is "seventy-three million, five hundred twenty-eight thousand, three hundred ninety-seven".