72585523 has 2 divisors, whose sum is σ = 72585524. Its totient is φ = 72585522.

The previous prime is 72585511. The next prime is 72585533. The reversal of 72585523 is 32558527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72585523 is a prime.

It is not a weakly prime, because it can be changed into another prime (72585503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36292761 + 36292762.

It is an arithmetic number, because the mean of its divisors is an integer number (36292762).

Almost surely, 2^72585523 is an apocalyptic number.

72585523 is a deficient number, since it is larger than the sum of its proper divisors (1).

72585523 is an equidigital number, since it uses as much as digits as its factorization.

72585523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 37.

The square root of 72585523 is about 8519.7137862724. The cubic root of 72585523 is about 417.1414407473.

The spelling of 72585523 in words is "seventy-two million, five hundred eighty-five thousand, five hundred twenty-three".