52091693 has 4 divisors (see below), whose sum is σ = 52109148. Its totient is φ = 52074240.

The previous prime is 52091639. The next prime is 52091701. The reversal of 52091693 is 39619025.

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 42276004 + 9815689 = 6502^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 52091693 - 2⁸ = 52091437 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 (52091623) 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, 2996 + ... + 10637.

It is an arithmetic number, because the mean of its divisors is an integer number (13027287).

Almost surely, 2^52091693 is an apocalyptic number.

It is an amenable number.

52091693 is a deficient number, since it is larger than the sum of its proper divisors (17455).

52091693 is a wasteful number, since it uses less digits than its factorization.

52091693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17454.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 52091693 is about 7217.4575163280. The cubic root of 52091693 is about 373.4703747708.

It can be divided in two parts, 52091 and 693, that multiplied together give a palindrome (36099063).

The spelling of 52091693 in words is "fifty-two million, ninety-one thousand, six hundred ninety-three".