71244973 has 2 divisors, whose sum is σ = 71244974. Its totient is φ = 71244972.

The previous prime is 71244947. The next prime is 71244989. The reversal of 71244973 is 37944217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55980324 + 15264649 = 7482^2 + 3907^2 .

It is a cyclic number.

It is not a de Polignac number, because 71244973 - 2⁵ = 71244941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71244073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35622486 + 35622487.

It is an arithmetic number, because the mean of its divisors is an integer number (35622487).

Almost surely, 2^71244973 is an apocalyptic number.

It is an amenable number.

71244973 is a deficient number, since it is larger than the sum of its proper divisors (1).

71244973 is an equidigital number, since it uses as much as digits as its factorization.

71244973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 71244973 is about 8440.6737290337. The cubic root of 71244973 is about 414.5574670180.

The spelling of 71244973 in words is "seventy-one million, two hundred forty-four thousand, nine hundred seventy-three".