71125849 has 2 divisors, whose sum is σ = 71125850. Its totient is φ = 71125848.

The previous prime is 71125843. The next prime is 71125853. The reversal of 71125849 is 94852117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71098624 + 27225 = 8432^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 71125849 - 2⁹ = 71125337 is a prime.

It is not a weakly prime, because it can be changed into another prime (71125843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35562924 + 35562925.

It is an arithmetic number, because the mean of its divisors is an integer number (35562925).

Almost surely, 2^71125849 is an apocalyptic number.

It is an amenable number.

71125849 is a deficient number, since it is larger than the sum of its proper divisors (1).

71125849 is an equidigital number, since it uses as much as digits as its factorization.

71125849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 71125849 is about 8433.6142311585. The cubic root of 71125849 is about 414.3262867631.

The spelling of 71125849 in words is "seventy-one million, one hundred twenty-five thousand, eight hundred forty-nine".