73750321 has 2 divisors, whose sum is σ = 73750322. Its totient is φ = 73750320.

The previous prime is 73750291. The next prime is 73750357. The reversal of 73750321 is 12305737.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52359696 + 21390625 = 7236^2 + 4625^2 .

It is a cyclic number.

It is not a de Polignac number, because 73750321 - 2¹¹ = 73748273 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73750321.

It is not a weakly prime, because it can be changed into another prime (73750921) 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, 36875160 + 36875161.

It is an arithmetic number, because the mean of its divisors is an integer number (36875161).

Almost surely, 2^73750321 is an apocalyptic number.

It is an amenable number.

73750321 is a deficient number, since it is larger than the sum of its proper divisors (1).

73750321 is an equidigital number, since it uses as much as digits as its factorization.

73750321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 73750321 is about 8587.8007079811. The cubic root of 73750321 is about 419.3609347533.

The spelling of 73750321 in words is "seventy-three million, seven hundred fifty thousand, three hundred twenty-one".