72522617 has 2 divisors, whose sum is σ = 72522618. Its totient is φ = 72522616.

The previous prime is 72522613. The next prime is 72522643. The reversal of 72522617 is 71622527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72522256 + 361 = 8516^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 72522617 - 2² = 72522613 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72522613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36261308 + 36261309.

It is an arithmetic number, because the mean of its divisors is an integer number (36261309).

Almost surely, 2^72522617 is an apocalyptic number.

It is an amenable number.

72522617 is a deficient number, since it is larger than the sum of its proper divisors (1).

72522617 is an equidigital number, since it uses as much as digits as its factorization.

72522617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 72522617 is about 8516.0211953705. The cubic root of 72522617 is about 417.0209011754.

The spelling of 72522617 in words is "seventy-two million, five hundred twenty-two thousand, six hundred seventeen".