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55233201 = 318411067
BaseRepresentation
bin1101001010110…
…0101010110001
310211221010201010
43102230222301
5103114430301
65251501133
71240321512
oct322545261
9124833633
1055233201
11291a5581
12165b77a9
13b59b38a
14749aa09
154cb05d6
hex34acab1

55233201 has 4 divisors (see below), whose sum is σ = 73644272. Its totient is φ = 36822132.

The previous prime is 55233181. The next prime is 55233229. The reversal of 55233201 is 10233255.

55233201 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.

It is not a de Polignac number, because 55233201 - 29 = 55232689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55233251) 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, 9205531 + ... + 9205536.

It is an arithmetic number, because the mean of its divisors is an integer number (18411068).

Almost surely, 255233201 is an apocalyptic number.

It is an amenable number.

55233201 is a deficient number, since it is larger than the sum of its proper divisors (18411071).

55233201 is a wasteful number, since it uses less digits than its factorization.

55233201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18411070.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 55233201 is about 7431.9042647225. The cubic root of 55233201 is about 380.8319744626.

Adding to 55233201 its reverse (10233255), we get a palindrome (65466456).

The spelling of 55233201 in words is "fifty-five million, two hundred thirty-three thousand, two hundred one".

Divisors: 1 3 18411067 55233201