72884533 has 2 divisors, whose sum is σ = 72884534. Its totient is φ = 72884532.

The previous prime is 72884521. The next prime is 72884579. The reversal of 72884533 is 33548827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37920964 + 34963569 = 6158^2 + 5913^2 .

It is a cyclic number.

It is not a de Polignac number, because 72884533 - 2⁵ = 72884501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72884333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36442266 + 36442267.

It is an arithmetic number, because the mean of its divisors is an integer number (36442267).

Almost surely, 2^72884533 is an apocalyptic number.

It is an amenable number.

72884533 is a deficient number, since it is larger than the sum of its proper divisors (1).

72884533 is an equidigital number, since it uses as much as digits as its factorization.

72884533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 72884533 is about 8537.2438760996. The cubic root of 72884533 is about 417.7134491271.

The spelling of 72884533 in words is "seventy-two million, eight hundred eighty-four thousand, five hundred thirty-three".