72317753 has 2 divisors, whose sum is σ = 72317754. Its totient is φ = 72317752.

The previous prime is 72317747. The next prime is 72317759. The reversal of 72317753 is 35771327.

It is a balanced prime because it is at equal distance from previous prime (72317747) and next prime (72317759).

It can be written as a sum of positive squares in only one way, i.e., 43983424 + 28334329 = 6632^2 + 5323^2 .

It is an emirp because it is prime and its reverse (35771327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72317753 - 2¹⁰ = 72316729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72317759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36158876 + 36158877.

It is an arithmetic number, because the mean of its divisors is an integer number (36158877).

Almost surely, 2^72317753 is an apocalyptic number.

It is an amenable number.

72317753 is a deficient number, since it is larger than the sum of its proper divisors (1).

72317753 is an equidigital number, since it uses as much as digits as its factorization.

72317753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30870, while the sum is 35.

The square root of 72317753 is about 8503.9845366746. The cubic root of 72317753 is about 416.6278599236.

The spelling of 72317753 in words is "seventy-two million, three hundred seventeen thousand, seven hundred fifty-three".