55438752 has 48 divisors (see below), whose sum is σ = 147928032. Its totient is φ = 18174720.

The previous prime is 55438711. The next prime is 55438759. The reversal of 55438752 is 25783455.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 55438752.

It is not an unprimeable number, because it can be changed into a prime (55438759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123 + ... + 10589.

It is an arithmetic number, because the mean of its divisors is an integer number (3081834).

Almost surely, 2^55438752 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 55438752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73964016).

55438752 is an abundant number, since it is smaller than the sum of its proper divisors (92489280).

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

55438752 is a wasteful number, since it uses less digits than its factorization.

55438752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541 (or 9533 counting only the distinct ones).

The product of its digits is 168000, while the sum is 39.

The square root of 55438752 is about 7445.7203815346. The cubic root of 55438752 is about 381.3038131690.

The spelling of 55438752 in words is "fifty-five million, four hundred thirty-eight thousand, seven hundred fifty-two".