52657765 has 8 divisors (see below), whose sum is σ = 65368440. Its totient is φ = 40673472.

The previous prime is 52657751. The next prime is 52657769. The reversal of 52657765 is 56775625.

It can be written as a sum of positive squares in 4 ways, for example, as 17623204 + 35034561 = 4198^2 + 5919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52657765 - 2¹⁵ = 52624997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52657769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181434 + ... + 181723.

It is an arithmetic number, because the mean of its divisors is an integer number (8171055).

Almost surely, 2^52657765 is an apocalyptic number.

It is an amenable number.

52657765 is a deficient number, since it is larger than the sum of its proper divisors (12710675).

52657765 is a wasteful number, since it uses less digits than its factorization.

52657765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363191.

The product of its digits is 441000, while the sum is 43.

The square root of 52657765 is about 7256.5670258050. The cubic root of 52657765 is about 374.8183179178.

The spelling of 52657765 in words is "fifty-two million, six hundred fifty-seven thousand, seven hundred sixty-five".