52820686 has 8 divisors (see below), whose sum is σ = 79287624. Its totient is φ = 26391480.

The previous prime is 52820681. The next prime is 52820707. The reversal of 52820686 is 68602825.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52820681) 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, 5625 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (9910953).

Almost surely, 2^52820686 is an apocalyptic number.

52820686 is a deficient number, since it is larger than the sum of its proper divisors (26466938).

52820686 is a wasteful number, since it uses less digits than its factorization.

52820686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18866.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 52820686 is about 7267.7841189733. The cubic root of 52820686 is about 375.2044775206.

The spelling of 52820686 in words is "fifty-two million, eight hundred twenty thousand, six hundred eighty-six".