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55808283 = 318602761
BaseRepresentation
bin1101010011100…
…1000100011011
310220000100120110
43110321010123
5103241331113
65312055403
71245235236
oct324710433
9126010513
1055808283
1129558653
1216834563
13b74006b
1475aa41d
154d75bc3
hex353911b

55808283 has 4 divisors (see below), whose sum is σ = 74411048. Its totient is φ = 37205520.

The previous prime is 55808239. The next prime is 55808303. The reversal of 55808283 is 38280855.

55808283 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.

It is not a de Polignac number, because 55808283 - 26 = 55808219 is a prime.

It is a super-2 number, since 2×558082832 = 6229128902816178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55808483) 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, 9301378 + ... + 9301383.

It is an arithmetic number, because the mean of its divisors is an integer number (18602762).

Almost surely, 255808283 is an apocalyptic number.

55808283 is a deficient number, since it is larger than the sum of its proper divisors (18602765).

55808283 is a wasteful number, since it uses less digits than its factorization.

55808283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18602764.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 55808283 is about 7470.4941603618. The cubic root of 55808283 is about 382.1491404346.

The spelling of 55808283 in words is "fifty-five million, eight hundred eight thousand, two hundred eighty-three".

Divisors: 1 3 18602761 55808283