55144488 has 64 divisors (see below), whose sum is σ = 160168320. Its totient is φ = 15494400.

The previous prime is 55144487. The next prime is 55144499. The reversal of 55144488 is 88444155.

It is not an unprimeable number, because it can be changed into a prime (55144487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7558 + ... + 12938.

It is an arithmetic number, because the mean of its divisors is an integer number (2502630).

Almost surely, 2^55144488 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 55144488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80084160).

55144488 is an abundant number, since it is smaller than the sum of its proper divisors (105023832).

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

55144488 is a wasteful number, since it uses less digits than its factorization.

55144488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5458 (or 5454 counting only the distinct ones).

The product of its digits is 102400, while the sum is 39.

The square root of 55144488 is about 7425.9334766748. The cubic root of 55144488 is about 380.6279736664.

The spelling of 55144488 in words is "fifty-five million, one hundred forty-four thousand, four hundred eighty-eight".