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252755531 = 7197183289
BaseRepresentation
bin11110001000010…
…11111001001011
3122121121022101222
433010023321023
51004201134111
641025232255
76156246410
oct1704137113
9577538358
10252755531
1111a745a76
127079268b
13404989b2
14257d6107
15172ca7db
hexf10be4b

252755531 has 8 divisors (see below), whose sum is σ = 290331360. Its totient is φ = 215546688.

The previous prime is 252755491. The next prime is 252755539. The reversal of 252755531 is 135557252.

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 252755531 - 226 = 185646667 is a prime.

It is a super-2 number, since 2×2527555312 = 127770716902183922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252755491 and 252755500.

It is not an unprimeable number, because it can be changed into a prime (252755539) 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, 90266 + ... + 93023.

It is an arithmetic number, because the mean of its divisors is an integer number (36291420).

Almost surely, 2252755531 is an apocalyptic number.

252755531 is a deficient number, since it is larger than the sum of its proper divisors (37575829).

252755531 is a wasteful number, since it uses less digits than its factorization.

252755531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183493.

The product of its digits is 52500, while the sum is 35.

The square root of 252755531 is about 15898.2870460940. The cubic root of 252755531 is about 632.2665740733.

The spelling of 252755531 in words is "two hundred fifty-two million, seven hundred fifty-five thousand, five hundred thirty-one".

Divisors: 1 7 197 1379 183289 1283023 36107933 252755531