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252415131 = 3173486349
BaseRepresentation
bin11110000101110…
…00110010011011
3122120222000110120
433002320302123
51004104241011
641014044323
76153331113
oct1702706233
9576860416
10252415131
1111a533251
12706496a3
13403a9a87
1425748043
151725ea06
hexf0b8c9b

252415131 has 8 divisors (see below), whose sum is σ = 338499600. Its totient is φ = 167303712.

The previous prime is 252415109. The next prime is 252415139. The reversal of 252415131 is 131514252.

It is a happy number.

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

It is not a de Polignac number, because 252415131 - 26 = 252415067 is a prime.

It is a super-2 number, since 2×2524151312 = 127426796715494322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252415139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242656 + ... + 243693.

It is an arithmetic number, because the mean of its divisors is an integer number (42312450).

Almost surely, 2252415131 is an apocalyptic number.

252415131 is a deficient number, since it is larger than the sum of its proper divisors (86084469).

252415131 is a wasteful number, since it uses less digits than its factorization.

252415131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486525.

The product of its digits is 1200, while the sum is 24.

The square root of 252415131 is about 15887.5778833654. The cubic root of 252415131 is about 631.9826103144.

Adding to 252415131 its reverse (131514252), we get a palindrome (383929383).

The spelling of 252415131 in words is "two hundred fifty-two million, four hundred fifteen thousand, one hundred thirty-one".

Divisors: 1 3 173 519 486349 1459047 84138377 252415131