71282017 has 4 divisors (see below), whose sum is σ = 73208596. Its totient is φ = 69355440.

The previous prime is 71281997. The next prime is 71282021. The reversal of 71282017 is 71028217.

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 48011041 + 23270976 = 6929^2 + 4824^2 .

It is a cyclic number.

It is not a de Polignac number, because 71282017 - 2¹⁵ = 71249249 is a prime.

It is a super-2 number, since 2×71282017² = 10162251895176578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71282027) 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, 963234 + ... + 963307.

It is an arithmetic number, because the mean of its divisors is an integer number (18302149).

Almost surely, 2^71282017 is an apocalyptic number.

It is an amenable number.

71282017 is a deficient number, since it is larger than the sum of its proper divisors (1926579).

71282017 is a wasteful number, since it uses less digits than its factorization.

71282017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926578.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 71282017 is about 8442.8678184607. The cubic root of 71282017 is about 414.6293046290.

The spelling of 71282017 in words is "seventy-one million, two hundred eighty-two thousand, seventeen".