53144388 has 72 divisors (see below), whose sum is σ = 150005856. Its totient is φ = 15724800.

The previous prime is 53144383. The next prime is 53144393. The reversal of 53144388 is 88344135.

53144388 is a `hidden beast` number, since 531 + 4 + 43 + 88 = 666.

53144388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53144383) and next prime (53144393).

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

It is not an unprimeable number, because it can be changed into a prime (53144381) 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 23 ways as a sum of consecutive naturals, for example, 15468 + ... + 18588.

Almost surely, 2^53144388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53144388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75002928).

53144388 is an abundant number, since it is smaller than the sum of its proper divisors (96861468).

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

53144388 is a wasteful number, since it uses less digits than its factorization.

53144388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185 (or 3180 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 53144388 is about 7290.0197530597. The cubic root of 53144388 is about 375.9693746748.

It can be divided in two parts, 53 and 144388, that added together give a palindrome (144441).

The spelling of 53144388 in words is "fifty-three million, one hundred forty-four thousand, three hundred eighty-eight".