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55108011 = 372624191
BaseRepresentation
bin1101001000111…
…0000110101011
310211200202222110
43102032012223
5103101424021
65245053403
71236260520
oct322160653
9124622873
1055108011
112911a512
1216557263
13b5563ba
147467147
154c88476
hex348e1ab

55108011 has 8 divisors (see below), whose sum is σ = 83974144. Its totient is φ = 31490280.

The previous prime is 55108007. The next prime is 55108013. The reversal of 55108011 is 11080155.

55108011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55108011 - 22 = 55108007 is a prime.

It is a super-2 number, since 2×551080112 = 6073785752752242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2624191 = 55108011 / (5 + 5 + 1 + 0 + 8 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55108013) 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 7 ways as a sum of consecutive naturals, for example, 1312075 + ... + 1312116.

It is an arithmetic number, because the mean of its divisors is an integer number (10496768).

Almost surely, 255108011 is an apocalyptic number.

55108011 is a deficient number, since it is larger than the sum of its proper divisors (28866133).

55108011 is a wasteful number, since it uses less digits than its factorization.

55108011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624201.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 55108011 is about 7423.4770155231. The cubic root of 55108011 is about 380.5440291684.

Adding to 55108011 its reverse (11080155), we get a palindrome (66188166).

The spelling of 55108011 in words is "fifty-five million, one hundred eight thousand, eleven".

Divisors: 1 3 7 21 2624191 7872573 18369337 55108011