52805497 has 4 divisors (see below), whose sum is σ = 52830820. Its totient is φ = 52780176.

The previous prime is 52805479. The next prime is 52805521. The reversal of 52805497 is 79450825.

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 33304441 + 19501056 = 5771^2 + 4416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52805497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52805407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9222 + ... + 13807.

It is an arithmetic number, because the mean of its divisors is an integer number (13207705).

Almost surely, 2^52805497 is an apocalyptic number.

It is an amenable number.

52805497 is a deficient number, since it is larger than the sum of its proper divisors (25323).

52805497 is a wasteful number, since it uses less digits than its factorization.

52805497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25322.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 52805497 is about 7266.7390898532. The cubic root of 52805497 is about 375.1685097487.

The spelling of 52805497 in words is "fifty-two million, eight hundred five thousand, four hundred ninety-seven".