72112273 has 2 divisors, whose sum is σ = 72112274. Its totient is φ = 72112272.

The previous prime is 72112267. The next prime is 72112289. The reversal of 72112273 is 37221127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63632529 + 8479744 = 7977^2 + 2912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72112273 is a prime.

It is not a weakly prime, because it can be changed into another prime (72112673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36056136 + 36056137.

It is an arithmetic number, because the mean of its divisors is an integer number (36056137).

Almost surely, 2^72112273 is an apocalyptic number.

It is an amenable number.

72112273 is a deficient number, since it is larger than the sum of its proper divisors (1).

72112273 is an equidigital number, since it uses as much as digits as its factorization.

72112273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 25.

The square root of 72112273 is about 8491.8945471550. The cubic root of 72112273 is about 416.2328905063.

The spelling of 72112273 in words is "seventy-two million, one hundred twelve thousand, two hundred seventy-three".