72522529 has 2 divisors, whose sum is σ = 72522530. Its totient is φ = 72522528.

The previous prime is 72522521. The next prime is 72522557. The reversal of 72522529 is 92522527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 11916304 = 7785^2 + 3452^2 .

It is a cyclic number.

It is not a de Polignac number, because 72522529 - 2³ = 72522521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72522494 and 72522503.

It is not a weakly prime, because it can be changed into another prime (72522521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36261264 + 36261265.

It is an arithmetic number, because the mean of its divisors is an integer number (36261265).

Almost surely, 2^72522529 is an apocalyptic number.

It is an amenable number.

72522529 is a deficient number, since it is larger than the sum of its proper divisors (1).

72522529 is an equidigital number, since it uses as much as digits as its factorization.

72522529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 72522529 is about 8516.0160286369. The cubic root of 72522529 is about 417.0207325023.

The spelling of 72522529 in words is "seventy-two million, five hundred twenty-two thousand, five hundred twenty-nine".