71757473 has 2 divisors, whose sum is σ = 71757474. Its totient is φ = 71757472.

The previous prime is 71757463. The next prime is 71757479. The reversal of 71757473 is 37475717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68840209 + 2917264 = 8297^2 + 1708^2 .

It is a cyclic number.

It is not a de Polignac number, because 71757473 - 2⁴ = 71757457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71757473.

It is not a weakly prime, because it can be changed into another prime (71757479) 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, 35878736 + 35878737.

It is an arithmetic number, because the mean of its divisors is an integer number (35878737).

Almost surely, 2^71757473 is an apocalyptic number.

It is an amenable number.

71757473 is a deficient number, since it is larger than the sum of its proper divisors (1).

71757473 is an equidigital number, since it uses as much as digits as its factorization.

71757473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144060, while the sum is 41.

The square root of 71757473 is about 8470.9782788058. The cubic root of 71757473 is about 415.5491312927.

The spelling of 71757473 in words is "seventy-one million, seven hundred fifty-seven thousand, four hundred seventy-three".