53155188 has 36 divisors (see below), whose sum is σ = 137645508. Its totient is φ = 17285760.

The previous prime is 53155183. The next prime is 53155213. The reversal of 53155188 is 88155135.

53155188 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 2 ways, for example, as 11009124 + 42146064 = 3318^2 + 6492^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×53155188² = 5650948022630688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53155183) 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 11 ways as a sum of consecutive naturals, for example, 16531 + ... + 19482.

Almost surely, 2^53155188 is an apocalyptic number.

It is an amenable number.

53155188 is an abundant number, since it is smaller than the sum of its proper divisors (84490320).

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

53155188 is a wasteful number, since it uses less digits than its factorization.

53155188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36064 (or 36059 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

The square root of 53155188 is about 7290.7604541639. The cubic root of 53155188 is about 375.9948411092.

The spelling of 53155188 in words is "fifty-three million, one hundred fifty-five thousand, one hundred eighty-eight".