72953297 has 2 divisors, whose sum is σ = 72953298. Its totient is φ = 72953296.

The previous prime is 72953269. The next prime is 72953303. The reversal of 72953297 is 79235927.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40246336 + 32706961 = 6344^2 + 5719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72953297 is a prime.

It is not a weakly prime, because it can be changed into another prime (72953497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36476648 + 36476649.

It is an arithmetic number, because the mean of its divisors is an integer number (36476649).

Almost surely, 2^72953297 is an apocalyptic number.

It is an amenable number.

72953297 is a deficient number, since it is larger than the sum of its proper divisors (1).

72953297 is an equidigital number, since it uses as much as digits as its factorization.

72953297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 44.

The square root of 72953297 is about 8541.2702216942. The cubic root of 72953297 is about 417.8447738307.

The spelling of 72953297 in words is "seventy-two million, nine hundred fifty-three thousand, two hundred ninety-seven".