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55180308 = 2234598359
BaseRepresentation
bin1101001001111…
…1110000010100
310211211110011010
43102133300110
5103111232213
65250412220
71240011351
oct322376024
9124743133
1055180308
1129169867
1216591070
13b580291
147485628
154c9eac3
hex349fc14

55180308 has 12 divisors (see below), whose sum is σ = 128754080. Its totient is φ = 18393432.

The previous prime is 55180297. The next prime is 55180337. The reversal of 55180308 is 80308155.

It is a happy number.

55180308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 2299168 + ... + 2299191.

Almost surely, 255180308 is an apocalyptic number.

It is an amenable number.

55180308 is an abundant number, since it is smaller than the sum of its proper divisors (73573772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55180308 is a wasteful number, since it uses less digits than its factorization.

55180308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4598366 (or 4598364 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 55180308 is about 7428.3449031396. The cubic root of 55180308 is about 380.7103701941.

The spelling of 55180308 in words is "fifty-five million, one hundred eighty thousand, three hundred eight".

Divisors: 1 2 3 4 6 12 4598359 9196718 13795077 18393436 27590154 55180308