53881644 has 24 divisors (see below), whose sum is σ = 132341440. Its totient is φ = 17015184.

The previous prime is 53881637. The next prime is 53881649. The reversal of 53881644 is 44618835.

53881644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (53881649) 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 7 ways as a sum of consecutive naturals, for example, 117934 + ... + 118389.

Almost surely, 2^53881644 is an apocalyptic number.

It is an amenable number.

53881644 is an abundant number, since it is smaller than the sum of its proper divisors (78459796).

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

53881644 is a wasteful number, since it uses less digits than its factorization.

53881644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236349 (or 236347 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 53881644 is about 7340.4117050749. The cubic root of 53881644 is about 377.6999662758.

The spelling of 53881644 in words is "fifty-three million, eight hundred eighty-one thousand, six hundred forty-four".