52821383 has 4 divisors (see below), whose sum is σ = 54642840. Its totient is φ = 50999928.

The previous prime is 52821371. The next prime is 52821389. The reversal of 52821383 is 38312825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52821383 - 2⁴ = 52821367 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 (52821389) 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, 910685 + ... + 910742.

It is an arithmetic number, because the mean of its divisors is an integer number (13660710).

Almost surely, 2^52821383 is an apocalyptic number.

52821383 is a deficient number, since it is larger than the sum of its proper divisors (1821457).

52821383 is a wasteful number, since it uses less digits than its factorization.

52821383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821456.

The product of its digits is 11520, while the sum is 32.

The square root of 52821383 is about 7267.8320701568. The cubic root of 52821383 is about 375.2061278612.

The spelling of 52821383 in words is "fifty-two million, eight hundred twenty-one thousand, three hundred eighty-three".