73531369 has 2 divisors, whose sum is σ = 73531370. Its totient is φ = 73531368.

The previous prime is 73531357. The next prime is 73531379. The reversal of 73531369 is 96313537.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47775744 + 25755625 = 6912^2 + 5075^2 .

It is a cyclic number.

It is not a de Polignac number, because 73531369 - 2⁹ = 73530857 is a prime.

It is a super-2 number, since 2×73531369² = 10813724454028322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73531379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36765684 + 36765685.

It is an arithmetic number, because the mean of its divisors is an integer number (36765685).

Almost surely, 2^73531369 is an apocalyptic number.

It is an amenable number.

73531369 is a deficient number, since it is larger than the sum of its proper divisors (1).

73531369 is an equidigital number, since it uses as much as digits as its factorization.

73531369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 37.

The square root of 73531369 is about 8575.0433818145. The cubic root of 73531369 is about 418.9455199224.

The spelling of 73531369 in words is "seventy-three million, five hundred thirty-one thousand, three hundred sixty-nine".