55451144 has 96 divisors (see below), whose sum is σ = 131307480. Its totient is φ = 21805056.

The previous prime is 55451083. The next prime is 55451159. The reversal of 55451144 is 44115455.

It can be written as a sum of positive squares in 4 ways, for example, as 52388644 + 3062500 = 7238^2 + 1750^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353114 + ... + 353270.

Almost surely, 2^55451144 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 55451144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65653740).

55451144 is an abundant number, since it is smaller than the sum of its proper divisors (75856336).

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

55451144 is a wasteful number, since it uses less digits than its factorization.

55451144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 236 counting only the distinct ones).

The product of its digits is 8000, while the sum is 29.

The square root of 55451144 is about 7446.5524909182. The cubic root of 55451144 is about 381.3322214854.

Adding to 55451144 its reverse (44115455), we get a palindrome (99566599).

The spelling of 55451144 in words is "fifty-five million, four hundred fifty-one thousand, one hundred forty-four".