53142228 has 18 divisors (see below), whose sum is σ = 134331834. Its totient is φ = 17714064.

The previous prime is 53142227. The next prime is 53142233. The reversal of 53142228 is 82224135.

53142228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 44916804 + 8225424 = 6702^2 + 2868^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53142227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 738051 + ... + 738122.

Almost surely, 2^53142228 is an apocalyptic number.

It is an amenable number.

53142228 is an abundant number, since it is smaller than the sum of its proper divisors (81189606).

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

53142228 is a wasteful number, since it uses less digits than its factorization.

53142228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476183 (or 1476178 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 53142228 is about 7289.8716038076. The cubic root of 53142228 is about 375.9642809739.

The spelling of 53142228 in words is "fifty-three million, one hundred forty-two thousand, two hundred twenty-eight".