73238521 has 8 divisors (see below), whose sum is σ = 77224320. Its totient is φ = 69265872.

The previous prime is 73238519. The next prime is 73238531. The reversal of 73238521 is 12583237.

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

It is a cyclic number.

It is not a de Polignac number, because 73238521 - 2¹ = 73238519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73238531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9456 + ... + 15358.

It is an arithmetic number, because the mean of its divisors is an integer number (9653040).

Almost surely, 2^73238521 is an apocalyptic number.

It is an amenable number.

73238521 is a deficient number, since it is larger than the sum of its proper divisors (3985799).

73238521 is a wasteful number, since it uses less digits than its factorization.

73238521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575.

The product of its digits is 10080, while the sum is 31.

The square root of 73238521 is about 8557.9507476966. The cubic root of 73238521 is about 418.3886120645.

The spelling of 73238521 in words is "seventy-three million, two hundred thirty-eight thousand, five hundred twenty-one".