71854841 has 2 divisors, whose sum is σ = 71854842. Its totient is φ = 71854840.

The previous prime is 71854831. The next prime is 71854859. The reversal of 71854841 is 14845817.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70896400 + 958441 = 8420^2 + 979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71854841 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71854795 and 71854804.

It is not a weakly prime, because it can be changed into another prime (71854831) 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, 35927420 + 35927421.

It is an arithmetic number, because the mean of its divisors is an integer number (35927421).

Almost surely, 2^71854841 is an apocalyptic number.

It is an amenable number.

71854841 is a deficient number, since it is larger than the sum of its proper divisors (1).

71854841 is an equidigital number, since it uses as much as digits as its factorization.

71854841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 38.

The square root of 71854841 is about 8476.7234825727. The cubic root of 71854841 is about 415.7369997672.

The spelling of 71854841 in words is "seventy-one million, eight hundred fifty-four thousand, eight hundred forty-one".