52757765 has 4 divisors (see below), whose sum is σ = 63309324. Its totient is φ = 42206208.

The previous prime is 52757723. The next prime is 52757767. The reversal of 52757765 is 56775725.

It is a happy number.

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 15864289 + 36893476 = 3983^2 + 6074^2 .

It is a cyclic number.

It is not a de Polignac number, because 52757765 - 2¹⁰ = 52756741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52757767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275772 + ... + 5275781.

It is an arithmetic number, because the mean of its divisors is an integer number (15827331).

Almost surely, 2^52757765 is an apocalyptic number.

It is an amenable number.

52757765 is a deficient number, since it is larger than the sum of its proper divisors (10551559).

52757765 is a wasteful number, since it uses less digits than its factorization.

52757765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10551558.

The product of its digits is 514500, while the sum is 44.

The square root of 52757765 is about 7263.4540681414. The cubic root of 52757765 is about 375.0554347679.

The spelling of 52757765 in words is "fifty-two million, seven hundred fifty-seven thousand, seven hundred sixty-five".