73456221 has 8 divisors (see below), whose sum is σ = 98046784. Its totient is φ = 48918240.

The previous prime is 73456171. The next prime is 73456237. The reversal of 73456221 is 12265437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73456221 - 2⁷ = 73456093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73456241) 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 in 7 ways as a sum of consecutive naturals, for example, 9760 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (12255848).

Almost surely, 2^73456221 is an apocalyptic number.

It is an amenable number.

73456221 is a deficient number, since it is larger than the sum of its proper divisors (24590563).

73456221 is a wasteful number, since it uses less digits than its factorization.

73456221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26291.

The product of its digits is 10080, while the sum is 30.

The square root of 73456221 is about 8570.6604762994. The cubic root of 73456221 is about 418.8027525136.

It can be divided in two parts, 734 and 56221, that multiplied together give a palindrome (41266214).

The spelling of 73456221 in words is "seventy-three million, four hundred fifty-six thousand, two hundred twenty-one".