72519115 has 16 divisors (see below), whose sum is σ = 91038528. Its totient is φ = 55351296.

The previous prime is 72519103. The next prime is 72519157. The reversal of 72519115 is 51191527.

It is a cyclic number.

It is not a de Polignac number, because 72519115 - 2⁷ = 72518987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76927 + ... + 77863.

It is an arithmetic number, because the mean of its divisors is an integer number (5689908).

Almost surely, 2^72519115 is an apocalyptic number.

72519115 is a deficient number, since it is larger than the sum of its proper divisors (18519413).

72519115 is a wasteful number, since it uses less digits than its factorization.

72519115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638.

The product of its digits is 3150, while the sum is 31.

The square root of 72519115 is about 8515.8155804362. The cubic root of 72519115 is about 417.0141886455.

The spelling of 72519115 in words is "seventy-two million, five hundred nineteen thousand, one hundred fifteen".