52731565 has 4 divisors (see below), whose sum is σ = 63277884. Its totient is φ = 42185248.

The previous prime is 52731463. The next prime is 52731577. The reversal of 52731565 is 56513725.

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 37785609 + 14945956 = 6147^2 + 3866^2 .

It is a cyclic number.

It is not a de Polignac number, because 52731565 - 2⁹ = 52731053 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 52731565.

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, 5273152 + ... + 5273161.

It is an arithmetic number, because the mean of its divisors is an integer number (15819471).

Almost surely, 2^52731565 is an apocalyptic number.

It is an amenable number.

52731565 is a deficient number, since it is larger than the sum of its proper divisors (10546319).

52731565 is a wasteful number, since it uses less digits than its factorization.

52731565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546318.

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

The square root of 52731565 is about 7261.6502945267. The cubic root of 52731565 is about 374.9933391409.

The spelling of 52731565 in words is "fifty-two million, seven hundred thirty-one thousand, five hundred sixty-five".