72523593 has 12 divisors (see below), whose sum is σ = 108636528. Its totient is φ = 48348900.

The previous prime is 72523579. The next prime is 72523631. The reversal of 72523593 is 39532527.

It is not a de Polignac number, because 72523593 - 2⁹ = 72523081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72523523) 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 in 11 ways as a sum of consecutive naturals, for example, 148983 + ... + 149468.

It is an arithmetic number, because the mean of its divisors is an integer number (9053044).

Almost surely, 2^72523593 is an apocalyptic number.

It is an amenable number.

72523593 is a deficient number, since it is larger than the sum of its proper divisors (36112935).

72523593 is an equidigital number, since it uses as much as digits as its factorization.

72523593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298466 (or 298454 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 72523593 is about 8516.0784989336. The cubic root of 72523593 is about 417.0227719048.

The spelling of 72523593 in words is "seventy-two million, five hundred twenty-three thousand, five hundred ninety-three".