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30505500255 = 3519107036843
BaseRepresentation
bin11100011010010001…
…001111111001011111
32220201222110222100210
4130122101033321133
5444433402002010
622003010423503
72126645321346
oct343221177137
986658428323
1030505500255
1111a3461793a
125ab4291b93
132b52024889
141695632b5d
15bd81cbb20
hex71a44fe5f

30505500255 has 16 divisors (see below), whose sum is σ = 51377685120. Its totient is φ = 15413305248.

The previous prime is 30505500253. The next prime is 30505500257. The reversal of 30505500255 is 55200550503.

It is an interprime number because it is at equal distance from previous prime (30505500253) and next prime (30505500257).

It is not a de Polignac number, because 30505500255 - 21 = 30505500253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30505500253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53518137 + ... + 53518706.

It is an arithmetic number, because the mean of its divisors is an integer number (3211105320).

Almost surely, 230505500255 is an apocalyptic number.

30505500255 is a deficient number, since it is larger than the sum of its proper divisors (20872184865).

30505500255 is a wasteful number, since it uses less digits than its factorization.

30505500255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107036870.

The product of its (nonzero) digits is 18750, while the sum is 30.

The spelling of 30505500255 in words is "thirty billion, five hundred five million, five hundred thousand, two hundred fifty-five".

Divisors: 1 3 5 15 19 57 95 285 107036843 321110529 535184215 1605552645 2033700017 6101100051 10168500085 30505500255