52111565 has 8 divisors (see below), whose sum is σ = 68218848. Its totient is φ = 37899280.

The previous prime is 52111559. The next prime is 52111567. The reversal of 52111565 is 56511125.

52111565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 52111565 - 2²⁴ = 35334349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52111567) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 473687 + ... + 473796.

It is an arithmetic number, because the mean of its divisors is an integer number (8527356).

Almost surely, 2^52111565 is an apocalyptic number.

52111565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52111565 is a deficient number, since it is larger than the sum of its proper divisors (16107283).

52111565 is a wasteful number, since it uses less digits than its factorization.

52111565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947499.

The product of its digits is 1500, while the sum is 26.

The square root of 52111565 is about 7218.8340471298. The cubic root of 52111565 is about 373.5178593717.

It can be divided in two parts, 5211 and 1565, that added together give a palindrome (6776).

The spelling of 52111565 in words is "fifty-two million, one hundred eleven thousand, five hundred sixty-five".