71775113 has 2 divisors, whose sum is σ = 71775114. Its totient is φ = 71775112.

The previous prime is 71775073. The next prime is 71775131. The reversal of 71775113 is 31157717.

Together with next prime (71775131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 16540489 = 7432^2 + 4067^2 .

It is a cyclic number.

It is not a de Polignac number, because 71775113 - 2¹⁶ = 71709577 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71775113.

It is not a weakly prime, because it can be changed into another prime (71775313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35887556 + 35887557.

It is an arithmetic number, because the mean of its divisors is an integer number (35887557).

Almost surely, 2^71775113 is an apocalyptic number.

It is an amenable number.

71775113 is a deficient number, since it is larger than the sum of its proper divisors (1).

71775113 is an equidigital number, since it uses as much as digits as its factorization.

71775113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5145, while the sum is 32.

The square root of 71775113 is about 8472.0194168805. The cubic root of 71775113 is about 415.5831797144.

The spelling of 71775113 in words is "seventy-one million, seven hundred seventy-five thousand, one hundred thirteen".