72246497 has 2 divisors, whose sum is σ = 72246498. Its totient is φ = 72246496.

The previous prime is 72246491. The next prime is 72246563. The reversal of 72246497 is 79464227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55591936 + 16654561 = 7456^2 + 4081^2 .

It is a cyclic number.

It is not a de Polignac number, because 72246497 - 2⁸ = 72246241 is a prime.

It is not a weakly prime, because it can be changed into another prime (72246491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36123248 + 36123249.

It is an arithmetic number, because the mean of its divisors is an integer number (36123249).

Almost surely, 2^72246497 is an apocalyptic number.

It is an amenable number.

72246497 is a deficient number, since it is larger than the sum of its proper divisors (1).

72246497 is an equidigital number, since it uses as much as digits as its factorization.

72246497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 72246497 is about 8499.7939386787. The cubic root of 72246497 is about 416.4909779485.

The spelling of 72246497 in words is "seventy-two million, two hundred forty-six thousand, four hundred ninety-seven".