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253305235 = 5367138041
BaseRepresentation
bin11110001100100…
…10000110010011
3122122122020110101
433012102012103
51004321231420
641045113231
76164026141
oct1706220623
9578566411
10253305235
1111aa90a77
12709b8817
134062bc71
14258da591
151738860a
hexf192193

253305235 has 8 divisors (see below), whose sum is σ = 304796736. Its totient is φ = 202090560.

The previous prime is 253305229. The next prime is 253305263. The reversal of 253305235 is 532503352.

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

It is not a de Polignac number, because 253305235 - 25 = 253305203 is a prime.

It is a Duffinian 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, 67186 + ... + 70855.

It is an arithmetic number, because the mean of its divisors is an integer number (38099592).

Almost surely, 2253305235 is an apocalyptic number.

253305235 is a deficient number, since it is larger than the sum of its proper divisors (51491501).

253305235 is a wasteful number, since it uses less digits than its factorization.

253305235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138413.

The product of its (nonzero) digits is 13500, while the sum is 28.

The square root of 253305235 is about 15915.5658083525. The cubic root of 253305235 is about 632.7246027000.

Adding to 253305235 its reverse (532503352), we get a palindrome (785808587).

The spelling of 253305235 in words is "two hundred fifty-three million, three hundred five thousand, two hundred thirty-five".

Divisors: 1 5 367 1835 138041 690205 50661047 253305235