71553265 has 16 divisors (see below), whose sum is σ = 98605440. Its totient is φ = 48827520.

The previous prime is 71553217. The next prime is 71553269. The reversal of 71553265 is 56235517.

It is not a de Polignac number, because 71553265 - 2²³ = 63164657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71553265.

It is not an unprimeable number, because it can be changed into a prime (71553269) 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, 2541 + ... + 12229.

It is an arithmetic number, because the mean of its divisors is an integer number (6162840).

Almost surely, 2^71553265 is an apocalyptic number.

It is an amenable number.

71553265 is a deficient number, since it is larger than the sum of its proper divisors (27052175).

71553265 is a wasteful number, since it uses less digits than its factorization.

71553265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9912.

The product of its digits is 31500, while the sum is 34.

The square root of 71553265 is about 8458.9163017493. The cubic root of 71553265 is about 415.1545657377.

The spelling of 71553265 in words is "seventy-one million, five hundred fifty-three thousand, two hundred sixty-five".