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55211023 = 719740037
BaseRepresentation
bin1101001010011…
…1010000001111
310211220000021201
43102213100033
5103113223043
65251210331
71240200040
oct322472017
9124800251
1055211023
112918a94a
12165a69a7
13b59125a
1474928c7
154ca8c4d
hex34a740f

55211023 has 8 divisors (see below), whose sum is σ = 63420192. Its totient is φ = 47082336.

The previous prime is 55211003. The next prime is 55211027. The reversal of 55211023 is 32011255.

55211023 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 55211023 - 217 = 55079951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55211027) 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, 18640 + ... + 21397.

It is an arithmetic number, because the mean of its divisors is an integer number (7927524).

Almost surely, 255211023 is an apocalyptic number.

55211023 is a deficient number, since it is larger than the sum of its proper divisors (8209169).

55211023 is a wasteful number, since it uses less digits than its factorization.

55211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40241.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55211023 is about 7430.4120343356. The cubic root of 55211023 is about 380.7809953287.

Adding to 55211023 its reverse (32011255), we get a palindrome (87222278).

The spelling of 55211023 in words is "fifty-five million, two hundred eleven thousand, twenty-three".

Divisors: 1 7 197 1379 40037 280259 7887289 55211023