71297565 has 16 divisors (see below), whose sum is σ = 116859456. Its totient is φ = 37097600.

The previous prime is 71297563. The next prime is 71297591. The reversal of 71297565 is 56579217.

It is not a de Polignac number, because 71297565 - 2¹ = 71297563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71297563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57351 + ... + 58580.

It is an arithmetic number, because the mean of its divisors is an integer number (7303716).

Almost surely, 2^71297565 is an apocalyptic number.

It is an amenable number.

71297565 is a deficient number, since it is larger than the sum of its proper divisors (45561891).

71297565 is a wasteful number, since it uses less digits than its factorization.

71297565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115980.

The product of its digits is 132300, while the sum is 42.

The square root of 71297565 is about 8443.7885454339. The cubic root of 71297565 is about 414.6594486870.

The spelling of 71297565 in words is "seventy-one million, two hundred ninety-seven thousand, five hundred sixty-five".