72522713 has 2 divisors, whose sum is σ = 72522714. Its totient is φ = 72522712.

The previous prime is 72522691. The next prime is 72522719. The reversal of 72522713 is 31722527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72369049 + 153664 = 8507^2 + 392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72522713 is a prime.

It is not a weakly prime, because it can be changed into another prime (72522719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36261356 + 36261357.

It is an arithmetic number, because the mean of its divisors is an integer number (36261357).

Almost surely, 2^72522713 is an apocalyptic number.

It is an amenable number.

72522713 is a deficient number, since it is larger than the sum of its proper divisors (1).

72522713 is an equidigital number, since it uses as much as digits as its factorization.

72522713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 29.

The square root of 72522713 is about 8516.0268318037. The cubic root of 72522713 is about 417.0210851823.

The spelling of 72522713 in words is "seventy-two million, five hundred twenty-two thousand, seven hundred thirteen".