53220260 has 12 divisors (see below), whose sum is σ = 111762588. Its totient is φ = 21288096.

The previous prime is 53220259. The next prime is 53220269. The reversal of 53220260 is 6202235.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14182756 + 39037504 = 3766^2 + 6248^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 2661013 = 53220260 / (5 + 3 + 2 + 2 + 0 + 2 + 6 + 0).

It is not an unprimeable number, because it can be changed into a prime (53220269) 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 3 ways as a sum of consecutive naturals, for example, 1330487 + ... + 1330526.

It is an arithmetic number, because the mean of its divisors is an integer number (9313549).

Almost surely, 2^53220260 is an apocalyptic number.

It is an amenable number.

53220260 is an abundant number, since it is smaller than the sum of its proper divisors (58542328).

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

53220260 is a wasteful number, since it uses less digits than its factorization.

53220260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661022 (or 2661020 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 53220260 is about 7295.2217238409. The cubic root of 53220260 is about 376.1482081341.

Adding to 53220260 its reverse (6202235), we get a palindrome (59422495).

The spelling of 53220260 in words is "fifty-three million, two hundred twenty thousand, two hundred sixty".