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211132475 = 5231893061
BaseRepresentation
bin11001001010110…
…10000000111011
3112201021122022022
430211122000323
5413022214400
632541145055
75142411401
oct1445320073
9481248268
10211132475
11a91a6a54
125a85b18b
1334984478
142007d471
1513807b85
hexc95a03b

211132475 has 24 divisors (see below), whose sum is σ = 273375360. Its totient is φ = 161568000.

The previous prime is 211132463. The next prime is 211132483. The reversal of 211132475 is 574231112.

It is not a de Polignac number, because 211132475 - 24 = 211132459 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 67445 + ... + 70505.

It is an arithmetic number, because the mean of its divisors is an integer number (11390640).

Almost surely, 2211132475 is an apocalyptic number.

211132475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

211132475 is a deficient number, since it is larger than the sum of its proper divisors (62242885).

211132475 is a wasteful number, since it uses less digits than its factorization.

211132475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191 (or 3186 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 211132475 is about 14530.3983083741. The cubic root of 211132475 is about 595.4587475004.

Adding to 211132475 its reverse (574231112), we get a palindrome (785363587).

The spelling of 211132475 in words is "two hundred eleven million, one hundred thirty-two thousand, four hundred seventy-five".

Divisors: 1 5 25 31 89 155 445 775 2225 2759 3061 13795 15305 68975 76525 94891 272429 474455 1362145 2372275 6810725 8445299 42226495 211132475