55011055 has 16 divisors (see below), whose sum is σ = 75147264. Its totient is φ = 38267680.
The previous prime is 55011041. The next prime is 55011071.
55011055 is nontrivially palindromic in base 10.
It is not a de Polignac number, because 55011055 - 27 = 55010927 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 20479 + ... + 23008.
It is an arithmetic number, because the mean of its divisors is an integer number (4696704).
Almost surely, 255011055 is an apocalyptic number.
55011055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.
55011055 is a deficient number, since it is larger than the sum of its proper divisors (20136209).
55011055 is a wasteful number, since it uses less digits than its factorization.
55011055 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 43526.
The product of its (nonzero) digits is 625, while the sum is 22.
The square root of 55011055 is about 7416.9437775947. The cubic root of 55011055 is about 380.3207241507.
It can be divided in two parts, 5501 and 1055, that added together give a palindrome (6556).
The spelling of 55011055 in words is "fifty-five million, eleven thousand, fifty-five".
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