52821912 has 64 divisors (see below), whose sum is σ = 155151360. Its totient is φ = 14774400.

The previous prime is 52821911. The next prime is 52821949. The reversal of 52821912 is 21912825.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 52821912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52821911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4264 + ... + 11127.

It is an arithmetic number, because the mean of its divisors is an integer number (2424240).

Almost surely, 2^52821912 is an apocalyptic number.

52821912 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

52821912 is an abundant number, since it is smaller than the sum of its proper divisors (102329448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52821912 is a wasteful number, since it uses less digits than its factorization.

52821912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15424 (or 15420 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 52821912 is about 7267.8684633116. The cubic root of 52821912 is about 375.2073804056.

The spelling of 52821912 in words is "fifty-two million, eight hundred twenty-one thousand, nine hundred twelve".