72534433 has 4 divisors (see below), whose sum is σ = 75688128. Its totient is φ = 69380740.

The previous prime is 72534431. The next prime is 72534439. The reversal of 72534433 is 33443527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72534433 - 2¹ = 72534431 is a prime.

It is a super-2 number, since 2×72534433² = 10522487941262978, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72534395 and 72534404.

It is not an unprimeable number, because it can be changed into a prime (72534431) 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 3 ways as a sum of consecutive naturals, for example, 1576813 + ... + 1576858.

It is an arithmetic number, because the mean of its divisors is an integer number (18922032).

Almost surely, 2^72534433 is an apocalyptic number.

It is an amenable number.

72534433 is a deficient number, since it is larger than the sum of its proper divisors (3153695).

72534433 is a wasteful number, since it uses less digits than its factorization.

72534433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153694.

The product of its digits is 30240, while the sum is 31.

The square root of 72534433 is about 8516.7149183238. The cubic root of 72534433 is about 417.0435481398.

The spelling of 72534433 in words is "seventy-two million, five hundred thirty-four thousand, four hundred thirty-three".