72297275 has 6 divisors (see below), whose sum is σ = 89648652. Its totient is φ = 57837800.

The previous prime is 72297271. The next prime is 72297293. The reversal of 72297275 is 57279227.

It is not a de Polignac number, because 72297275 - 2² = 72297271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72297271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1445921 + ... + 1445970.

It is an arithmetic number, because the mean of its divisors is an integer number (14941442).

Almost surely, 2^72297275 is an apocalyptic number.

72297275 is a deficient number, since it is larger than the sum of its proper divisors (17351377).

72297275 is a wasteful number, since it uses less digits than its factorization.

72297275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891901 (or 2891896 counting only the distinct ones).

The product of its digits is 123480, while the sum is 41.

The square root of 72297275 is about 8502.7804276013. The cubic root of 72297275 is about 416.5885311263.

The spelling of 72297275 in words is "seventy-two million, two hundred ninety-seven thousand, two hundred seventy-five".