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30210055 = 513034637
BaseRepresentation
bin111001100111…
…1100000000111
32002211211101221
41303033200013
530213210210
62555301211
7514531651
oct163174007
962754357
1030210055
1116064297
12a14a807
136349795
1440256d1
1529bb1da
hex1ccf807

30210055 has 8 divisors (see below), whose sum is σ = 36287712. Its totient is φ = 24144288.

The previous prime is 30210043. The next prime is 30210127. The reversal of 30210055 is 55001203.

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 30210055 - 25 = 30210023 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

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 7 ways as a sum of consecutive naturals, for example, 4197 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (4535964).

Almost surely, 230210055 is an apocalyptic number.

30210055 is a deficient number, since it is larger than the sum of its proper divisors (6077657).

30210055 is a wasteful number, since it uses less digits than its factorization.

30210055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 30210055 is about 5496.3674367713. The cubic root of 30210055 is about 311.4467753516.

Adding to 30210055 its reverse (55001203), we get a palindrome (85211258).

The spelling of 30210055 in words is "thirty million, two hundred ten thousand, fifty-five".

Divisors: 1 5 1303 4637 6515 23185 6042011 30210055