73245391 has 2 divisors, whose sum is σ = 73245392. Its totient is φ = 73245390.

The previous prime is 73245377. The next prime is 73245427. The reversal of 73245391 is 19354237.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73245391 - 2²³ = 64856783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73245331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36622695 + 36622696.

It is an arithmetic number, because the mean of its divisors is an integer number (36622696).

Almost surely, 2^73245391 is an apocalyptic number.

73245391 is a deficient number, since it is larger than the sum of its proper divisors (1).

73245391 is an equidigital number, since it uses as much as digits as its factorization.

73245391 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 73245391 is about 8558.3521194211. The cubic root of 73245391 is about 418.4016937045.

The spelling of 73245391 in words is "seventy-three million, two hundred forty-five thousand, three hundred ninety-one".