52821132 has 48 divisors (see below), whose sum is σ = 151694592. Its totient is φ = 13930560.

The previous prime is 52821103. The next prime is 52821149. The reversal of 52821132 is 23112825.

It is a super-2 number, since 2×52821132² = 5580143971522848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23094 + ... + 25277.

It is an arithmetic number, because the mean of its divisors is an integer number (3160304).

Almost surely, 2^52821132 is an apocalyptic number.

52821132 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

52821132 is an abundant number, since it is smaller than the sum of its proper divisors (98873460).

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

52821132 is a wasteful number, since it uses less digits than its factorization.

52821132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48398 (or 48396 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 52821132 is about 7267.8148022635. The cubic root of 52821132 is about 375.2055335509.

Adding to 52821132 its reverse (23112825), we get a palindrome (75933957).

The spelling of 52821132 in words is "fifty-two million, eight hundred twenty-one thousand, one hundred thirty-two".