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55106823 = 3113162557
BaseRepresentation
bin1101001000110…
…1110100000111
310211200201100110
43102031310013
5103101404243
65245044103
71236254202
oct322156407
9124621313
1055106823
1129119632
1216556633
13b5559b5
147466939
154c87e33
hex348dd07

55106823 has 8 divisors (see below), whose sum is σ = 74126448. Its totient is φ = 36412544.

The previous prime is 55106813. The next prime is 55106833. The reversal of 55106823 is 32860155.

55106823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55106813) and next prime (55106833).

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

It is a cyclic number.

It is not a de Polignac number, because 55106823 - 25 = 55106791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55106813) 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, 80940 + ... + 81617.

It is an arithmetic number, because the mean of its divisors is an integer number (9265806).

Almost surely, 255106823 is an apocalyptic number.

55106823 is a deficient number, since it is larger than the sum of its proper divisors (19019625).

55106823 is a wasteful number, since it uses less digits than its factorization.

55106823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162673.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 55106823 is about 7423.3969986792. The cubic root of 55106823 is about 380.5412946020.

Adding to 55106823 its reverse (32860155), we get a palindrome (87966978).

The spelling of 55106823 in words is "fifty-five million, one hundred six thousand, eight hundred twenty-three".

Divisors: 1 3 113 339 162557 487671 18368941 55106823