72496523 has 4 divisors (see below), whose sum is σ = 79087128. Its totient is φ = 65905920.

The previous prime is 72496511. The next prime is 72496531. The reversal of 72496523 is 32569427.

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 72496523 - 2¹⁶ = 72430987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72496573) 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, 3295286 + ... + 3295307.

It is an arithmetic number, because the mean of its divisors is an integer number (19771782).

Almost surely, 2^72496523 is an apocalyptic number.

72496523 is a deficient number, since it is larger than the sum of its proper divisors (6590605).

72496523 is a wasteful number, since it uses less digits than its factorization.

72496523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6590604.

The product of its digits is 90720, while the sum is 38.

The square root of 72496523 is about 8514.4890040448. The cubic root of 72496523 is about 416.9708797742.

The spelling of 72496523 in words is "seventy-two million, four hundred ninety-six thousand, five hundred twenty-three".