72496273 has 2 divisors, whose sum is σ = 72496274. Its totient is φ = 72496272.

The previous prime is 72496271. The next prime is 72496289. The reversal of 72496273 is 37269427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38588944 + 33907329 = 6212^2 + 5823^2 .

It is a cyclic number.

It is not a de Polignac number, because 72496273 - 2¹ = 72496271 is a prime.

Together with 72496271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72496271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36248136 + 36248137.

It is an arithmetic number, because the mean of its divisors is an integer number (36248137).

Almost surely, 2^72496273 is an apocalyptic number.

It is an amenable number.

72496273 is a deficient number, since it is larger than the sum of its proper divisors (1).

72496273 is an equidigital number, since it uses as much as digits as its factorization.

72496273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The square root of 72496273 is about 8514.4743231746. The cubic root of 72496273 is about 416.9704004738.

The spelling of 72496273 in words is "seventy-two million, four hundred ninety-six thousand, two hundred seventy-three".