53765 has 4 divisors (see below), whose sum is σ = 64524. Its totient is φ = 43008.

The previous prime is 53759. The next prime is 53773. The reversal of 53765 is 56735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37636 + 16129 = 194^2 + 127^2 .

It is a cyclic number.

It is not a de Polignac number, because 53765 - 2¹² = 49669 is a prime.

It is a Duffinian number.

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, 5372 + ... + 5381.

It is an arithmetic number, because the mean of its divisors is an integer number (16131).

2⁵³⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

53765 is a deficient number, since it is larger than the sum of its proper divisors (10759).

53765 is a wasteful number, since it uses less digits than its factorization.

53765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10758.

The product of its digits is 3150, while the sum is 26.

The square root of 53765 is about 231.8728099627. The cubic root of 53765 is about 37.7427218693.

It can be divided in two parts, 53 and 765, that added together give a palindrome (818).

The spelling of 53765 in words is "fifty-three thousand, seven hundred sixty-five".