72331459 has 2 divisors, whose sum is σ = 72331460. Its totient is φ = 72331458.

The previous prime is 72331409. The next prime is 72331477. The reversal of 72331459 is 95413327.

It is a strong prime.

It is an emirp because it is prime and its reverse (95413327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72331459 - 2⁷ = 72331331 is a prime.

It is a super-2 number, since 2×72331459² = 10463679922137362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72331409) 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, 36165729 + 36165730.

It is an arithmetic number, because the mean of its divisors is an integer number (36165730).

Almost surely, 2^72331459 is an apocalyptic number.

72331459 is a deficient number, since it is larger than the sum of its proper divisors (1).

72331459 is an equidigital number, since it uses as much as digits as its factorization.

72331459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 72331459 is about 8504.7903560288. The cubic root of 72331459 is about 416.6541786835.

The spelling of 72331459 in words is "seventy-two million, three hundred thirty-one thousand, four hundred fifty-nine".