71843273 has 2 divisors, whose sum is σ = 71843274. Its totient is φ = 71843272.

The previous prime is 71843257. The next prime is 71843279. The reversal of 71843273 is 37234817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64048009 + 7795264 = 8003^2 + 2792^2 .

It is a cyclic number.

It is not a de Polignac number, because 71843273 - 2⁴ = 71843257 is a prime.

It is a super-2 number, since 2×71843273² = 10322911750705058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71843279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35921636 + 35921637.

It is an arithmetic number, because the mean of its divisors is an integer number (35921637).

Almost surely, 2^71843273 is an apocalyptic number.

It is an amenable number.

71843273 is a deficient number, since it is larger than the sum of its proper divisors (1).

71843273 is an equidigital number, since it uses as much as digits as its factorization.

71843273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 71843273 is about 8476.0411159928. The cubic root of 71843273 is about 415.7146885647.

The spelling of 71843273 in words is "seventy-one million, eight hundred forty-three thousand, two hundred seventy-three".