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30355055 = 523263957
BaseRepresentation
bin111001111001…
…0111001101111
32010010012022022
41303302321233
530232330210
63002340355
7516004463
oct163627157
963105268
1030355055
1116153225
12a1ba6bb
13639a793
1440624a3
1529e9155
hex1cf2e6f

30355055 has 8 divisors (see below), whose sum is σ = 38009952. Its totient is φ = 23228128.

The previous prime is 30355051. The next prime is 30355069. The reversal of 30355055 is 55055303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30355055 - 22 = 30355051 is a prime.

It is a super-3 number, since 3×303550553 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30355051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131864 + ... + 132093.

It is an arithmetic number, because the mean of its divisors is an integer number (4751244).

Almost surely, 230355055 is an apocalyptic number.

30355055 is a deficient number, since it is larger than the sum of its proper divisors (7654897).

30355055 is a wasteful number, since it uses less digits than its factorization.

30355055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263985.

The product of its (nonzero) digits is 5625, while the sum is 26.

The square root of 30355055 is about 5509.5421769871. The cubic root of 30355055 is about 311.9442666994.

The spelling of 30355055 in words is "thirty million, three hundred fifty-five thousand, fifty-five".

Divisors: 1 5 23 115 263957 1319785 6071011 30355055