53321020 has 12 divisors (see below), whose sum is σ = 111974184. Its totient is φ = 21328400.

The previous prime is 53321017. The next prime is 53321029. The reversal of 53321020 is 2012335.

It is a junction number, because it is equal to n+sod(n) for n = 53320985 and 53321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53321029) 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, 1333006 + ... + 1333045.

It is an arithmetic number, because the mean of its divisors is an integer number (9331182).

Almost surely, 2^53321020 is an apocalyptic number.

It is an amenable number.

53321020 is an abundant number, since it is smaller than the sum of its proper divisors (58653164).

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

53321020 is a wasteful number, since it uses less digits than its factorization.

53321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666060 (or 2666058 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 53321020 is about 7302.1243484345. The cubic root of 53321020 is about 376.3854410970.

Adding to 53321020 its reverse (2012335), we get a palindrome (55333355).

The spelling of 53321020 in words is "fifty-three million, three hundred twenty-one thousand, twenty".