53221160 has 16 divisors (see below), whose sum is σ = 119747700. Its totient is φ = 21288448.

The previous prime is 53221151. The next prime is 53221171. The reversal of 53221160 is 6112235.

It can be written as a sum of positive squares in 2 ways, for example, as 51638596 + 1582564 = 7186^2 + 1258^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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 3 ways as a sum of consecutive naturals, for example, 665225 + ... + 665304.

Almost surely, 2^53221160 is an apocalyptic number.

It is an amenable number.

53221160 is an abundant number, since it is smaller than the sum of its proper divisors (66526540).

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

53221160 is a wasteful number, since it uses less digits than its factorization.

53221160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330540 (or 1330536 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 53221160 is about 7295.2834077916. The cubic root of 53221160 is about 376.1503284512.

Adding to 53221160 its reverse (6112235), we get a palindrome (59333395).

The spelling of 53221160 in words is "fifty-three million, two hundred twenty-one thousand, one hundred sixty".