72575165 has 8 divisors (see below), whose sum is σ = 93789528. Its totient is φ = 53593920.

The previous prime is 72575161. The next prime is 72575171. The reversal of 72575165 is 56157527.

It can be written as a sum of positive squares in 4 ways, for example, as 13623481 + 58951684 = 3691^2 + 7678^2 .

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

It is not a de Polignac number, because 72575165 - 2² = 72575161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72575161) 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, 558206 + ... + 558335.

It is an arithmetic number, because the mean of its divisors is an integer number (11723691).

Almost surely, 2^72575165 is an apocalyptic number.

It is an amenable number.

72575165 is a deficient number, since it is larger than the sum of its proper divisors (21214363).

72575165 is a wasteful number, since it uses less digits than its factorization.

72575165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116559.

The product of its digits is 73500, while the sum is 38.

The square root of 72575165 is about 8519.1058803140. The cubic root of 72575165 is about 417.1215976876.

The spelling of 72575165 in words is "seventy-two million, five hundred seventy-five thousand, one hundred sixty-five".