72519109 has 8 divisors (see below), whose sum is σ = 78616832. Its totient is φ = 66495600.

The previous prime is 72519103. The next prime is 72519157. The reversal of 72519109 is 90191527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72519109 - 2³ = 72519101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72519101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16509 + ... + 20434.

It is an arithmetic number, because the mean of its divisors is an integer number (9827104).

Almost surely, 2^72519109 is an apocalyptic number.

It is an amenable number.

72519109 is a deficient number, since it is larger than the sum of its proper divisors (6097723).

72519109 is a wasteful number, since it uses less digits than its factorization.

72519109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37107.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 72519109 is about 8515.8152281505. The cubic root of 72519109 is about 417.0141771447.

The spelling of 72519109 in words is "seventy-two million, five hundred nineteen thousand, one hundred nine".