53321880 has 32 divisors (see below), whose sum is σ = 159966000. Its totient is φ = 14219136.

The previous prime is 53321861. The next prime is 53321881. The reversal of 53321880 is 8812335.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53321881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222055 + ... + 222294.

Almost surely, 2^53321880 is an apocalyptic number.

It is an amenable number.

53321880 is an abundant number, since it is smaller than the sum of its proper divisors (106644120).

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

53321880 is a wasteful number, since it uses less digits than its factorization.

53321880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444363 (or 444359 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 53321880 is about 7302.1832351702. The cubic root of 53321880 is about 376.3874646251.

The spelling of 53321880 in words is "fifty-three million, three hundred twenty-one thousand, eight hundred eighty".