72558559 has 2 divisors, whose sum is σ = 72558560. Its totient is φ = 72558558.

The previous prime is 72558557. The next prime is 72558611. The reversal of 72558559 is 95585527.

It is a weak prime.

It is an emirp because it is prime and its reverse (95585527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72558559 - 2¹ = 72558557 is a prime.

Together with 72558557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72558557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36279279 + 36279280.

It is an arithmetic number, because the mean of its divisors is an integer number (36279280).

Almost surely, 2^72558559 is an apocalyptic number.

72558559 is a deficient number, since it is larger than the sum of its proper divisors (1).

72558559 is an equidigital number, since it uses as much as digits as its factorization.

72558559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630000, while the sum is 46.

The square root of 72558559 is about 8518.1311917580. The cubic root of 72558559 is about 417.0897812501.

The spelling of 72558559 in words is "seventy-two million, five hundred fifty-eight thousand, five hundred fifty-nine".