71021059 has 2 divisors, whose sum is σ = 71021060. Its totient is φ = 71021058.

The previous prime is 71021051. The next prime is 71021099. The reversal of 71021059 is 95012017.

It is a weak prime.

It is an emirp because it is prime and its reverse (95012017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71021059 - 2³ = 71021051 is a prime.

It is not a weakly prime, because it can be changed into another prime (71021051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35510529 + 35510530.

It is an arithmetic number, because the mean of its divisors is an integer number (35510530).

Almost surely, 2^71021059 is an apocalyptic number.

71021059 is a deficient number, since it is larger than the sum of its proper divisors (1).

71021059 is an equidigital number, since it uses as much as digits as its factorization.

71021059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 71021059 is about 8427.3993022759. The cubic root of 71021059 is about 414.1227105577.

The spelling of 71021059 in words is "seventy-one million, twenty-one thousand, fifty-nine".