73075521 has 8 divisors (see below), whose sum is σ = 97554880. Its totient is φ = 48656592.

The previous prime is 73075511. The next prime is 73075523. The reversal of 73075521 is 12557037.

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

It is not a de Polignac number, because 73075521 - 2¹⁰ = 73074497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73075523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12205 + ... + 17178.

It is an arithmetic number, because the mean of its divisors is an integer number (12194360).

Almost surely, 2^73075521 is an apocalyptic number.

It is an amenable number.

73075521 is a deficient number, since it is larger than the sum of its proper divisors (24479359).

73075521 is a wasteful number, since it uses less digits than its factorization.

73075521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30215.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 73075521 is about 8548.4221351077. The cubic root of 73075521 is about 418.0779922844.

The spelling of 73075521 in words is "seventy-three million, seventy-five thousand, five hundred twenty-one".