55444145 has 8 divisors (see below), whose sum is σ = 69425856. Its totient is φ = 42426736.

The previous prime is 55444141. The next prime is 55444159. The reversal of 55444145 is 54144455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55444145 - 2² = 55444141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55444141) 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 7 ways as a sum of consecutive naturals, for example, 240947 + ... + 241176.

It is an arithmetic number, because the mean of its divisors is an integer number (8678232).

Almost surely, 2^55444145 is an apocalyptic number.

It is an amenable number.

55444145 is a deficient number, since it is larger than the sum of its proper divisors (13981711).

55444145 is a wasteful number, since it uses less digits than its factorization.

55444145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482151.

The product of its digits is 32000, while the sum is 32.

The square root of 55444145 is about 7446.0825270742. The cubic root of 55444145 is about 381.3161769922.

The spelling of 55444145 in words is "fifty-five million, four hundred forty-four thousand, one hundred forty-five".