72504563 has 2 divisors, whose sum is σ = 72504564. Its totient is φ = 72504562.

The previous prime is 72504547. The next prime is 72504577. The reversal of 72504563 is 36540527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72504563 - 2⁴ = 72504547 is a prime.

It is not a weakly prime, because it can be changed into another prime (72504863) 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, 36252281 + 36252282.

It is an arithmetic number, because the mean of its divisors is an integer number (36252282).

Almost surely, 2^72504563 is an apocalyptic number.

72504563 is a deficient number, since it is larger than the sum of its proper divisors (1).

72504563 is an equidigital number, since it uses as much as digits as its factorization.

72504563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 72504563 is about 8514.9611273335. The cubic root of 72504563 is about 416.9862934880.

The spelling of 72504563 in words is "seventy-two million, five hundred four thousand, five hundred sixty-three".