55444155 has 32 divisors (see below), whose sum is σ = 95934720. Its totient is φ = 27181440.

The previous prime is 55444141. The next prime is 55444159. The reversal of 55444155 is 55144455.

55444155 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 55444155 - 2⁴ = 55444139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55444159) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 64116 + ... + 64974.

It is an arithmetic number, because the mean of its divisors is an integer number (2997960).

Almost surely, 2^55444155 is an apocalyptic number.

55444155 is a deficient number, since it is larger than the sum of its proper divisors (40490565).

55444155 is a wasteful number, since it uses less digits than its factorization.

55444155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211.

The product of its digits is 40000, while the sum is 33.

The square root of 55444155 is about 7446.0831985682. The cubic root of 55444155 is about 381.3161999171.

The spelling of 55444155 in words is "fifty-five million, four hundred forty-four thousand, one hundred fifty-five".