53221230 has 48 divisors (see below), whose sum is σ = 139243104. Its totient is φ = 14103360.

The previous prime is 53221187. The next prime is 53221253. The reversal of 53221230 is 3212235.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13260 + ... + 16800.

It is an arithmetic number, because the mean of its divisors is an integer number (2900898).

Almost surely, 2^53221230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53221230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69621552).

53221230 is an abundant number, since it is smaller than the sum of its proper divisors (86021874).

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

53221230 is a wasteful number, since it uses less digits than its factorization.

53221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721 (or 3718 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53221230 is about 7295.2882054104. The cubic root of 53221230 is about 376.1504933637.

Adding to 53221230 its reverse (3212235), we get a palindrome (56433465).

The spelling of 53221230 in words is "fifty-three million, two hundred twenty-one thousand, two hundred thirty".