55144485 has 48 divisors (see below), whose sum is σ = 105401088. Its totient is φ = 26448000.

The previous prime is 55144477. The next prime is 55144487. The reversal of 55144485 is 58444155.

It is a happy number.

It is not a de Polignac number, because 55144485 - 2³ = 55144477 is a prime.

It is a congruent number.

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

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 47 ways as a sum of consecutive naturals, for example, 49444 + ... + 50546.

It is an arithmetic number, because the mean of its divisors is an integer number (2195856).

Almost surely, 2^55144485 is an apocalyptic number.

55144485 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55144485 is a deficient number, since it is larger than the sum of its proper divisors (50256603).

55144485 is a wasteful number, since it uses less digits than its factorization.

55144485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1223 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 55144485 is about 7425.9332746800. The cubic root of 55144485 is about 380.6279667641.

It can be divided in two parts, 5514 and 4485, that added together give a palindrome (9999).

The spelling of 55144485 in words is "fifty-five million, one hundred forty-four thousand, four hundred eighty-five".