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30055017 = 319527281
BaseRepresentation
bin111001010100…
…1101001101001
32002112221201210
41302221221221
530143230032
62552103333
7513314646
oct162515151
962487653
1030055017
1115a68863
12a094b49
1362c4045
143dc4dcd
15298a2cc
hex1ca9a69

30055017 has 8 divisors (see below), whose sum is σ = 42182560. Its totient is φ = 18982080.

The previous prime is 30055001. The next prime is 30055021. The reversal of 30055017 is 71055003.

It is a happy number.

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

It is not a de Polignac number, because 30055017 - 24 = 30055001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30054984 and 30055002.

It is not an unprimeable number, because it can be changed into a prime (30055037) 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, 263584 + ... + 263697.

It is an arithmetic number, because the mean of its divisors is an integer number (5272820).

Almost surely, 230055017 is an apocalyptic number.

It is an amenable number.

30055017 is a deficient number, since it is larger than the sum of its proper divisors (12127543).

30055017 is a wasteful number, since it uses less digits than its factorization.

30055017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527303.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 30055017 is about 5482.2456165334. The cubic root of 30055017 is about 310.9130797232.

The spelling of 30055017 in words is "thirty million, fifty-five thousand, seventeen".

Divisors: 1 3 19 57 527281 1581843 10018339 30055017