73239533 has 4 divisors (see below), whose sum is σ = 73403100. Its totient is φ = 73075968.

The previous prime is 73239527. The next prime is 73239599. The reversal of 73239533 is 33593237.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44649124 + 28590409 = 6682^2 + 5347^2 .

It is a cyclic number.

It is not a de Polignac number, because 73239533 - 2¹⁴ = 73223149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73239493 and 73239502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73239233) 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, 81110 + ... + 82007.

It is an arithmetic number, because the mean of its divisors is an integer number (18350775).

Almost surely, 2^73239533 is an apocalyptic number.

It is an amenable number.

73239533 is a deficient number, since it is larger than the sum of its proper divisors (163567).

73239533 is a wasteful number, since it uses less digits than its factorization.

73239533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163566.

The product of its digits is 51030, while the sum is 35.

The square root of 73239533 is about 8558.0098737966. The cubic root of 73239533 is about 418.3905391347.

The spelling of 73239533 in words is "seventy-three million, two hundred thirty-nine thousand, five hundred thirty-three".