73285521 has 16 divisors (see below), whose sum is σ = 107961984. Its totient is φ = 43983104.

The previous prime is 73285517. The next prime is 73285571. The reversal of 73285521 is 12558237.

It is a cyclic number.

It is not a de Polignac number, because 73285521 - 2² = 73285517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73285571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30066 + ... + 32411.

It is an arithmetic number, because the mean of its divisors is an integer number (6747624).

Almost surely, 2^73285521 is an apocalyptic number.

It is an amenable number.

73285521 is a deficient number, since it is larger than the sum of its proper divisors (34676463).

73285521 is a wasteful number, since it uses less digits than its factorization.

73285521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62520.

The product of its digits is 16800, while the sum is 33.

The square root of 73285521 is about 8560.6962917744. The cubic root of 73285521 is about 418.4780916605.

The spelling of 73285521 in words is "seventy-three million, two hundred eighty-five thousand, five hundred twenty-one".