73350821 has 2 divisors, whose sum is σ = 73350822. Its totient is φ = 73350820.

The previous prime is 73350751. The next prime is 73350829. The reversal of 73350821 is 12805337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65788321 + 7562500 = 8111^2 + 2750^2 .

It is an emirp because it is prime and its reverse (12805337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73350821 - 2¹⁸ = 73088677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73350829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36675410 + 36675411.

It is an arithmetic number, because the mean of its divisors is an integer number (36675411).

Almost surely, 2^73350821 is an apocalyptic number.

It is an amenable number.

73350821 is a deficient number, since it is larger than the sum of its proper divisors (1).

73350821 is an equidigital number, since it uses as much as digits as its factorization.

73350821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 73350821 is about 8564.5093846641. The cubic root of 73350821 is about 418.6023477059.

The spelling of 73350821 in words is "seventy-three million, three hundred fifty thousand, eight hundred twenty-one".