53118180 has 60 divisors (see below), whose sum is σ = 166638780. Its totient is φ = 14164416.

The previous prime is 53118173. The next prime is 53118181. The reversal of 53118180 is 8181135.

It can be written as a sum of positive squares in 2 ways, for example, as 22581504 + 30536676 = 4752^2 + 5526^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (53118181) 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 19 ways as a sum of consecutive naturals, for example, 14775 + ... + 18014.

It is an arithmetic number, because the mean of its divisors is an integer number (2777313).

Almost surely, 2^53118180 is an apocalyptic number.

It is an amenable number.

53118180 is an abundant number, since it is smaller than the sum of its proper divisors (113520600).

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

53118180 is a wasteful number, since it uses less digits than its factorization.

53118180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32810 (or 32799 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 53118180 is about 7288.2220054002. Note that the first 3 decimals coincide. The cubic root of 53118180 is about 375.9075617791.

The spelling of 53118180 in words is "fifty-three million, one hundred eighteen thousand, one hundred eighty".