55511445 has 32 divisors (see below), whose sum is σ = 101998080. Its totient is φ = 25496640.

The previous prime is 55511437. The next prime is 55511459. The reversal of 55511445 is 54411555.

55511445 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 55511445 - 2³ = 55511437 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 5719 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (3187440).

Almost surely, 2^55511445 is an apocalyptic number.

55511445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55511445 is a deficient number, since it is larger than the sum of its proper divisors (46486635).

55511445 is a wasteful number, since it uses less digits than its factorization.

55511445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17745.

The product of its digits is 10000, while the sum is 30.

The square root of 55511445 is about 7450.6003113843. The cubic root of 55511445 is about 381.4703994825.

It can be divided in two parts, 5551 and 1445, that added together give a palindrome (6996).

The spelling of 55511445 in words is "fifty-five million, five hundred eleven thousand, four hundred forty-five".