52821355 has 8 divisors (see below), whose sum is σ = 63525312. Its totient is φ = 42163968.

The previous prime is 52821347. The next prime is 52821359. The reversal of 52821355 is 55312825.

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

It is a cyclic number.

It is not a de Polignac number, because 52821355 - 2³ = 52821347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52821359) 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 7 ways as a sum of consecutive naturals, for example, 9094 + ... + 13723.

It is an arithmetic number, because the mean of its divisors is an integer number (7940664).

Almost surely, 2^52821355 is an apocalyptic number.

52821355 is a deficient number, since it is larger than the sum of its proper divisors (10703957).

52821355 is a wasteful number, since it uses less digits than its factorization.

52821355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23285.

The product of its digits is 12000, while the sum is 31.

The square root of 52821355 is about 7267.8301438600. The cubic root of 52821355 is about 375.2060615638.

The spelling of 52821355 in words is "fifty-two million, eight hundred twenty-one thousand, three hundred fifty-five".