73333921 has 4 divisors (see below), whose sum is σ = 73484992. Its totient is φ = 73182852.

The previous prime is 73333919. The next prime is 73333933. The reversal of 73333921 is 12933337.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73333921 - 2¹ = 73333919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73333951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74805 + ... + 75778.

It is an arithmetic number, because the mean of its divisors is an integer number (18371248).

Almost surely, 2^73333921 is an apocalyptic number.

It is an amenable number.

73333921 is a deficient number, since it is larger than the sum of its proper divisors (151071).

73333921 is a wasteful number, since it uses less digits than its factorization.

73333921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151070.

The product of its digits is 10206, while the sum is 31.

The square root of 73333921 is about 8563.5226980490. The cubic root of 73333921 is about 418.5701966318.

The spelling of 73333921 in words is "seventy-three million, three hundred thirty-three thousand, nine hundred twenty-one".