71522465 has 16 divisors (see below), whose sum is σ = 99103872. Its totient is φ = 48536064.

The previous prime is 71522461. The next prime is 71522467. The reversal of 71522465 is 56422517.

It is a cyclic number.

It is not a de Polignac number, because 71522465 - 2² = 71522461 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71522461) 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, 7139 + ... + 13928.

It is an arithmetic number, because the mean of its divisors is an integer number (6193992).

Almost surely, 2^71522465 is an apocalyptic number.

It is an amenable number.

71522465 is a deficient number, since it is larger than the sum of its proper divisors (27581407).

71522465 is a wasteful number, since it uses less digits than its factorization.

71522465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21176.

The product of its digits is 16800, while the sum is 32.

The square root of 71522465 is about 8457.0955416147. The cubic root of 71522465 is about 415.0949896269.

The spelling of 71522465 in words is "seventy-one million, five hundred twenty-two thousand, four hundred sixty-five".