71053765 has 4 divisors (see below), whose sum is σ = 85264524. Its totient is φ = 56843008.

The previous prime is 71053757. The next prime is 71053771. The reversal of 71053765 is 56735017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56735017 = 43 ⋅1319419.

It can be written as a sum of positive squares in 2 ways, for example, as 49533444 + 21520321 = 7038^2 + 4639^2 .

It is a cyclic number.

It is not a de Polignac number, because 71053765 - 2³ = 71053757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71053765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7105372 + ... + 7105381.

It is an arithmetic number, because the mean of its divisors is an integer number (21316131).

Almost surely, 2^71053765 is an apocalyptic number.

It is an amenable number.

71053765 is a deficient number, since it is larger than the sum of its proper divisors (14210759).

71053765 is a wasteful number, since it uses less digits than its factorization.

71053765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14210758.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 71053765 is about 8429.3395352186. The cubic root of 71053765 is about 414.1862701976.

The spelling of 71053765 in words is "seventy-one million, fifty-three thousand, seven hundred sixty-five".