73373521 has 16 divisors (see below), whose sum is σ = 80881920. Its totient is φ = 66147840.

The previous prime is 73373507. The next prime is 73373537. The reversal of 73373521 is 12537337.

It is a cyclic number.

It is not a de Polignac number, because 73373521 - 2¹³ = 73365329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73373551) 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, 207681 + ... + 208033.

It is an arithmetic number, because the mean of its divisors is an integer number (5055120).

Almost surely, 2^73373521 is an apocalyptic number.

It is an amenable number.

73373521 is a deficient number, since it is larger than the sum of its proper divisors (7508399).

73373521 is a wasteful number, since it uses less digits than its factorization.

73373521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its digits is 13230, while the sum is 31.

The square root of 73373521 is about 8565.8345185977. The cubic root of 73373521 is about 418.6455251060.

The spelling of 73373521 in words is "seventy-three million, three hundred seventy-three thousand, five hundred twenty-one".