53221080 has 128 divisors (see below), whose sum is σ = 181854720. Its totient is φ = 12334080.

The previous prime is 53221073. The next prime is 53221081. The reversal of 53221080 is 8012235.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53221081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29484 + ... + 31236.

It is an arithmetic number, because the mean of its divisors is an integer number (1420740).

Almost surely, 2^53221080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53221080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90927360).

53221080 is an abundant number, since it is smaller than the sum of its proper divisors (128633640).

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

53221080 is a wasteful number, since it uses less digits than its factorization.

53221080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 53221080 is about 7295.2779247949. The cubic root of 53221080 is about 376.1501399795.

It can be divided in two parts, 532 and 21080, that added together give a palindrome (21612).

The spelling of 53221080 in words is "fifty-three million, two hundred twenty-one thousand, eighty".