9072539 has 4 divisors (see below), whose sum is σ = 10368624. Its totient is φ = 7776456.

The previous prime is 9072523. The next prime is 9072541. The reversal of 9072539 is 9352709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9352709 = 103 ⋅90803.

It is a cyclic number.

It is not a de Polignac number, because 9072539 - 2⁴ = 9072523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9072499 and 9072508.

It is not an unprimeable number, because it can be changed into a prime (9072589) 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, 648032 + ... + 648045.

It is an arithmetic number, because the mean of its divisors is an integer number (2592156).

Almost surely, 2^9072539 is an apocalyptic number.

9072539 is a deficient number, since it is larger than the sum of its proper divisors (1296085).

9072539 is a wasteful number, since it uses less digits than its factorization.

9072539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296084.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 9072539 is about 3012.0655703354. The cubic root of 9072539 is about 208.5657290751.

The spelling of 9072539 in words is "nine million, seventy-two thousand, five hundred thirty-nine".