55144225 has 24 divisors (see below), whose sum is σ = 73834560. Its totient is φ = 40729920.

The previous prime is 55144211. The next prime is 55144237. The reversal of 55144225 is 52244155.

55144225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55144225 - 2²¹ = 53047073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55144193 and 55144202.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 15022 + ... + 18328.

It is an arithmetic number, because the mean of its divisors is an integer number (3076440).

Almost surely, 2^55144225 is an apocalyptic number.

It is an amenable number.

55144225 is a deficient number, since it is larger than the sum of its proper divisors (18690335).

55144225 is a wasteful number, since it uses less digits than its factorization.

55144225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369 (or 3364 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 55144225 is about 7425.9157684423. The cubic root of 55144225 is about 380.6273685572.

The spelling of 55144225 in words is "fifty-five million, one hundred forty-four thousand, two hundred twenty-five".