71058289 has 4 divisors (see below), whose sum is σ = 72791460. Its totient is φ = 69325120.

The previous prime is 71058287. The next prime is 71058301. The reversal of 71058289 is 98285017.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26061025 + 44997264 = 5105^2 + 6708^2 .

It is a cyclic number.

It is not a de Polignac number, because 71058289 - 2¹ = 71058287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71058287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866524 + ... + 866605.

It is an arithmetic number, because the mean of its divisors is an integer number (18197865).

Almost surely, 2^71058289 is an apocalyptic number.

It is an amenable number.

71058289 is a deficient number, since it is larger than the sum of its proper divisors (1733171).

71058289 is a wasteful number, since it uses less digits than its factorization.

71058289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733170.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 71058289 is about 8429.6078793737. The cubic root of 71058289 is about 414.1950604375.

The spelling of 71058289 in words is "seventy-one million, fifty-eight thousand, two hundred eighty-nine".