53117220 has 48 divisors (see below), whose sum is σ = 160171200. Its totient is φ = 13074816.

The previous prime is 53117219. The next prime is 53117227. The reversal of 53117220 is 2271135.

It is not an unprimeable number, because it can be changed into a prime (53117227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33270 + ... + 34829.

It is an arithmetic number, because the mean of its divisors is an integer number (3336900).

Almost surely, 2^53117220 is an apocalyptic number.

It is an amenable number.

53117220 is an abundant number, since it is smaller than the sum of its proper divisors (107053980).

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

53117220 is a wasteful number, since it uses less digits than its factorization.

53117220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68124 (or 68122 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 53117220 is about 7288.1561454184. The cubic root of 53117220 is about 375.9052971844.

Adding to 53117220 its reverse (2271135), we get a palindrome (55388355).

The spelling of 53117220 in words is "fifty-three million, one hundred seventeen thousand, two hundred twenty".