72544715 has 4 divisors (see below), whose sum is σ = 87053664. Its totient is φ = 58035768.

The previous prime is 72544709. The next prime is 72544721. The reversal of 72544715 is 51744527.

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

It is an interprime number because it is at equal distance from previous prime (72544709) and next prime (72544721).

It is a cyclic number.

It is not a de Polignac number, because 72544715 - 2¹⁴ = 72528331 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7254467 + ... + 7254476.

It is an arithmetic number, because the mean of its divisors is an integer number (21763416).

Almost surely, 2^72544715 is an apocalyptic number.

72544715 is a deficient number, since it is larger than the sum of its proper divisors (14508949).

72544715 is a wasteful number, since it uses less digits than its factorization.

72544715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14508948.

The product of its digits is 39200, while the sum is 35.

The square root of 72544715 is about 8517.3185334353. The cubic root of 72544715 is about 417.0632529843.

The spelling of 72544715 in words is "seventy-two million, five hundred forty-four thousand, seven hundred fifteen".