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55168153 = 192903587
BaseRepresentation
bin1101001001110…
…0110010011001
310211210211110221
43102130302121
5103110340103
65250240041
71236631045
oct322346231
9124724427
1055168153
1129160717
1216586021
13b5778a1
147481025
154c9b1bd
hex349cc99

55168153 has 4 divisors (see below), whose sum is σ = 58071760. Its totient is φ = 52264548.

The previous prime is 55168133. The next prime is 55168171. The reversal of 55168153 is 35186155.

55168153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35186155 = 57037231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-55168153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55168103) 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 3 ways as a sum of consecutive naturals, for example, 1451775 + ... + 1451812.

It is an arithmetic number, because the mean of its divisors is an integer number (14517940).

Almost surely, 255168153 is an apocalyptic number.

It is an amenable number.

55168153 is a deficient number, since it is larger than the sum of its proper divisors (2903607).

55168153 is a wasteful number, since it uses less digits than its factorization.

55168153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903606.

The product of its digits is 18000, while the sum is 34.

The square root of 55168153 is about 7427.5267081310. The cubic root of 55168153 is about 380.6824141198.

The spelling of 55168153 in words is "fifty-five million, one hundred sixty-eight thousand, one hundred fifty-three".

Divisors: 1 19 2903587 55168153