72523579 has 2 divisors, whose sum is σ = 72523580. Its totient is φ = 72523578.

The previous prime is 72523559. The next prime is 72523631. The reversal of 72523579 is 97532527.

It is a weak prime.

It is an emirp because it is prime and its reverse (97532527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72523579 - 2¹¹ = 72521531 is a prime.

It is not a weakly prime, because it can be changed into another prime (72523559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36261789 + 36261790.

It is an arithmetic number, because the mean of its divisors is an integer number (36261790).

Almost surely, 2^72523579 is an apocalyptic number.

72523579 is a deficient number, since it is larger than the sum of its proper divisors (1).

72523579 is an equidigital number, since it uses as much as digits as its factorization.

72523579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 40.

The square root of 72523579 is about 8516.0776769590. The cubic root of 72523579 is about 417.0227450707.

The spelling of 72523579 in words is "seventy-two million, five hundred twenty-three thousand, five hundred seventy-nine".