73265521 has 4 divisors (see below), whose sum is σ = 83732032. Its totient is φ = 62799012.

The previous prime is 73265519. The next prime is 73265531. The reversal of 73265521 is 12556237.

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 73265521 - 2¹ = 73265519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73265531) 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, 5233245 + ... + 5233258.

It is an arithmetic number, because the mean of its divisors is an integer number (20933008).

Almost surely, 2^73265521 is an apocalyptic number.

It is an amenable number.

73265521 is a deficient number, since it is larger than the sum of its proper divisors (10466511).

73265521 is a wasteful number, since it uses less digits than its factorization.

73265521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10466510.

The product of its digits is 12600, while the sum is 31.

The square root of 73265521 is about 8559.5280827859. The cubic root of 73265521 is about 418.4400199141.

The spelling of 73265521 in words is "seventy-three million, two hundred sixty-five thousand, five hundred twenty-one".