72539007 has 4 divisors (see below), whose sum is σ = 96718680. Its totient is φ = 48359336.

The previous prime is 72539003. The next prime is 72539053. The reversal of 72539007 is 70093527.

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

It is a cyclic number.

It is not a de Polignac number, because 72539007 - 2² = 72539003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72539003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12089832 + ... + 12089837.

It is an arithmetic number, because the mean of its divisors is an integer number (24179670).

Almost surely, 2^72539007 is an apocalyptic number.

72539007 is a deficient number, since it is larger than the sum of its proper divisors (24179673).

72539007 is a wasteful number, since it uses less digits than its factorization.

72539007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24179672.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 72539007 is about 8516.9834448589. The cubic root of 72539007 is about 417.0523141701.

The spelling of 72539007 in words is "seventy-two million, five hundred thirty-nine thousand, seven".