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252112531 = 11109283743
BaseRepresentation
bin11110000011011…
…10111010010011
3122120101122101011
433001232322103
51004020100111
641003351351
76150630646
oct1701567223
9576348334
10252112531
1111a346970
1270522557
1340302118
14256a9a5d
1517200021
hexf06ee93

252112531 has 16 divisors (see below), whose sum is σ = 278910720. Its totient is φ = 225983520.

The previous prime is 252112519. The next prime is 252112537. The reversal of 252112531 is 135211252.

It is a cyclic number.

It is not a de Polignac number, because 252112531 - 219 = 251588243 is a prime.

It is a super-2 number, since 2×2521125312 = 127121456574451922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252112537) 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, 338946 + ... + 339688.

It is an arithmetic number, because the mean of its divisors is an integer number (17431920).

Almost surely, 2252112531 is an apocalyptic number.

252112531 is a deficient number, since it is larger than the sum of its proper divisors (26798189).

252112531 is a wasteful number, since it uses less digits than its factorization.

252112531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its digits is 600, while the sum is 22.

The square root of 252112531 is about 15878.0518641299. The cubic root of 252112531 is about 631.7299651211.

Adding to 252112531 its reverse (135211252), we get a palindrome (387323783).

The spelling of 252112531 in words is "two hundred fifty-two million, one hundred twelve thousand, five hundred thirty-one".

Divisors: 1 11 109 283 743 1199 3113 8173 30847 80987 210269 339317 890857 2312959 22919321 252112531