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252112513 = 1311924523
BaseRepresentation
bin11110000011011…
…10111010000001
3122120101122100111
433001232322001
51004020100023
641003351321
76150630622
oct1701567201
9576348314
10252112513
1111a346954
1270522541
1340302103
14256a9a49
151720000d
hexf06ee81

252112513 has 4 divisors (see below), whose sum is σ = 254037168. Its totient is φ = 250187860.

The previous prime is 252112481. The next prime is 252112517. The reversal of 252112513 is 315211252.

252112513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252112513 - 25 = 252112481 is a prime.

It is a super-2 number, since 2×2521125132 = 127121438422350338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252112517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962131 + ... + 962392.

It is an arithmetic number, because the mean of its divisors is an integer number (63509292).

Almost surely, 2252112513 is an apocalyptic number.

It is an amenable number.

252112513 is a deficient number, since it is larger than the sum of its proper divisors (1924655).

252112513 is a wasteful number, since it uses less digits than its factorization.

252112513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924654.

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

The square root of 252112513 is about 15878.0512973098. The cubic root of 252112513 is about 631.7299500866.

Adding to 252112513 its reverse (315211252), we get a palindrome (567323765).

The spelling of 252112513 in words is "two hundred fifty-two million, one hundred twelve thousand, five hundred thirteen".

Divisors: 1 131 1924523 252112513