53220460 has 36 divisors (see below), whose sum is σ = 114627744. Its totient is φ = 20755840.

The previous prime is 53220457. The next prime is 53220473. The reversal of 53220460 is 6402235.

It is a happy number.

It is a super-2 number, since 2×53220460² = 5664834725223200, which contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 32829 + ... + 34411.

It is an arithmetic number, because the mean of its divisors is an integer number (3184104).

Almost surely, 2^53220460 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 53220460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57313872).

53220460 is an abundant number, since it is smaller than the sum of its proper divisors (61407284).

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

53220460 is a wasteful number, since it uses less digits than its factorization.

53220460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 53220460 is about 7295.2354314306. The cubic root of 53220460 is about 376.1486793177.

Adding to 53220460 its reverse (6402235), we get a palindrome (59622695).

The spelling of 53220460 in words is "fifty-three million, two hundred twenty thousand, four hundred sixty".