53236565 has 4 divisors (see below), whose sum is σ = 63883884. Its totient is φ = 42589248.

The previous prime is 53236553. The next prime is 53236609. The reversal of 53236565 is 56563235.

53236565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42432196 + 10804369 = 6514^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 53236565 - 2⁴ = 53236549 is a prime.

It is a super-3 number, since 3×53236565³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5323652 + ... + 5323661.

It is an arithmetic number, because the mean of its divisors is an integer number (15970971).

Almost surely, 2^53236565 is an apocalyptic number.

It is an amenable number.

53236565 is a deficient number, since it is larger than the sum of its proper divisors (10647319).

53236565 is a wasteful number, since it uses less digits than its factorization.

53236565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10647318.

The product of its digits is 81000, while the sum is 35.

The square root of 53236565 is about 7296.3391505604. The cubic root of 53236565 is about 376.1866175062.

The spelling of 53236565 in words is "fifty-three million, two hundred thirty-six thousand, five hundred sixty-five".