71452565 has 4 divisors (see below), whose sum is σ = 85743084. Its totient is φ = 57162048.

The previous prime is 71452543. The next prime is 71452571. The reversal of 71452565 is 56525417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56525417 = 13 ⋅4348109.

It can be written as a sum of positive squares in 2 ways, for example, as 28536964 + 42915601 = 5342^2 + 6551^2 .

It is a cyclic number.

It is not a de Polignac number, because 71452565 - 2⁶ = 71452501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7145252 + ... + 7145261.

It is an arithmetic number, because the mean of its divisors is an integer number (21435771).

Almost surely, 2^71452565 is an apocalyptic number.

It is an amenable number.

71452565 is a deficient number, since it is larger than the sum of its proper divisors (14290519).

71452565 is a wasteful number, since it uses less digits than its factorization.

71452565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14290518.

The product of its digits is 42000, while the sum is 35.

The square root of 71452565 is about 8452.9619069294. The cubic root of 71452565 is about 414.9597193207.

The spelling of 71452565 in words is "seventy-one million, four hundred fifty-two thousand, five hundred sixty-five".