71371849 has 2 divisors, whose sum is σ = 71371850. Its totient is φ = 71371848.

The previous prime is 71371843. The next prime is 71371879. The reversal of 71371849 is 94817317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71318025 + 53824 = 8445^2 + 232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71371849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71371843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35685924 + 35685925.

It is an arithmetic number, because the mean of its divisors is an integer number (35685925).

Almost surely, 2^71371849 is an apocalyptic number.

It is an amenable number.

71371849 is a deficient number, since it is larger than the sum of its proper divisors (1).

71371849 is an equidigital number, since it uses as much as digits as its factorization.

71371849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 71371849 is about 8448.1861366805. The cubic root of 71371849 is about 414.8034081200.

The spelling of 71371849 in words is "seventy-one million, three hundred seventy-one thousand, eight hundred forty-nine".