72917275 has 6 divisors (see below), whose sum is σ = 90417452. Its totient is φ = 58333800.

The previous prime is 72917263. The next prime is 72917287. The reversal of 72917275 is 57271927.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72917263) and next prime (72917287).

It is not a de Polignac number, because 72917275 - 2¹⁵ = 72884507 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 (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1458321 + ... + 1458370.

Almost surely, 2^72917275 is an apocalyptic number.

72917275 is a deficient number, since it is larger than the sum of its proper divisors (17500177).

72917275 is a wasteful number, since it uses less digits than its factorization.

72917275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916701 (or 2916696 counting only the distinct ones).

The product of its digits is 61740, while the sum is 40.

The square root of 72917275 is about 8539.1612585780. The cubic root of 72917275 is about 417.7759897224.

The spelling of 72917275 in words is "seventy-two million, nine hundred seventeen thousand, two hundred seventy-five".