72090559 has 2 divisors, whose sum is σ = 72090560. Its totient is φ = 72090558.

The previous prime is 72090517. The next prime is 72090569. The reversal of 72090559 is 95509027.

It is a strong prime.

It is an emirp because it is prime and its reverse (95509027) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72090559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72090509) 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, 36045279 + 36045280.

It is an arithmetic number, because the mean of its divisors is an integer number (36045280).

Almost surely, 2^72090559 is an apocalyptic number.

72090559 is a deficient number, since it is larger than the sum of its proper divisors (1).

72090559 is an equidigital number, since it uses as much as digits as its factorization.

72090559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 72090559 is about 8490.6159376102. The cubic root of 72090559 is about 416.1911084909.

The spelling of 72090559 in words is "seventy-two million, ninety thousand, five hundred fifty-nine".