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211052975 = 5271206017
BaseRepresentation
bin11001001010001…
…10100110101111
3112201010121020212
430211012212233
5413012143400
632535333035
75141630540
oct1445064657
9481117225
10211052975
11a9152251
125a82117b
1334957223
142005c4c7
15137de335
hexc9469af

211052975 has 12 divisors (see below), whose sum is σ = 299092464. Its totient is φ = 144721920.

The previous prime is 211052887. The next prime is 211053019. The reversal of 211052975 is 579250112.

It is a happy number.

It is not a de Polignac number, because 211052975 - 212 = 211048879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 602834 + ... + 603183.

It is an arithmetic number, because the mean of its divisors is an integer number (24924372).

Almost surely, 2211052975 is an apocalyptic number.

211052975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

211052975 is a deficient number, since it is larger than the sum of its proper divisors (88039489).

211052975 is a wasteful number, since it uses less digits than its factorization.

211052975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206034 (or 1206029 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 211052975 is about 14527.6624065952. The cubic root of 211052975 is about 595.3839999383.

The spelling of 211052975 in words is "two hundred eleven million, fifty-two thousand, nine hundred seventy-five".

Divisors: 1 5 7 25 35 175 1206017 6030085 8442119 30150425 42210595 211052975