72536423 has 2 divisors, whose sum is σ = 72536424. Its totient is φ = 72536422.

The previous prime is 72536419. The next prime is 72536447. The reversal of 72536423 is 32463527.

It is a weak prime.

It is an emirp because it is prime and its reverse (32463527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72536423 - 2² = 72536419 is a prime.

It is equal to p_4258454 and since 72536423 and 4258454 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72536423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72536413) 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, 36268211 + 36268212.

It is an arithmetic number, because the mean of its divisors is an integer number (36268212).

Almost surely, 2^72536423 is an apocalyptic number.

72536423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72536423 is an equidigital number, since it uses as much as digits as its factorization.

72536423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 32.

The square root of 72536423 is about 8516.8317466062. The cubic root of 72536423 is about 417.0473620024.

The spelling of 72536423 in words is "seventy-two million, five hundred thirty-six thousand, four hundred twenty-three".