55450111 has 4 divisors (see below), whose sum is σ = 55999224. Its totient is φ = 54901000.

The previous prime is 55450093. The next prime is 55450127. The reversal of 55450111 is 11105455.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55450111 - 2⁹ = 55449599 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55450211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274405 + ... + 274606.

It is an arithmetic number, because the mean of its divisors is an integer number (13999806).

Almost surely, 2^55450111 is an apocalyptic number.

55450111 is a deficient number, since it is larger than the sum of its proper divisors (549113).

55450111 is a wasteful number, since it uses less digits than its factorization.

55450111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549112.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 55450111 is about 7446.4831296391. The cubic root of 55450111 is about 381.3298535233.

Adding to 55450111 its reverse (11105455), we get a palindrome (66555566).

The spelling of 55450111 in words is "fifty-five million, four hundred fifty thousand, one hundred eleven".