73057447 has 2 divisors, whose sum is σ = 73057448. Its totient is φ = 73057446.

The previous prime is 73057429. The next prime is 73057459. The reversal of 73057447 is 74475037.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73057447 - 2⁷ = 73057319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73057247) 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, 36528723 + 36528724.

It is an arithmetic number, because the mean of its divisors is an integer number (36528724).

Almost surely, 2^73057447 is an apocalyptic number.

73057447 is a deficient number, since it is larger than the sum of its proper divisors (1).

73057447 is an equidigital number, since it uses as much as digits as its factorization.

73057447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 73057447 is about 8547.3649155749. The cubic root of 73057447 is about 418.0435212577.

The spelling of 73057447 in words is "seventy-three million, fifty-seven thousand, four hundred forty-seven".