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252807263 = 318155073
BaseRepresentation
bin11110001000110…
…00100001011111
3122121200221100222
433010120201133
51004204313023
641030311555
76156553262
oct1704304137
9577627328
10252807263
1111a780925
12707b85bb
13404b63c7
142580acd9
15172dacc8
hexf11885f

252807263 has 4 divisors (see below), whose sum is σ = 260962368. Its totient is φ = 244652160.

The previous prime is 252807251. The next prime is 252807299. The reversal of 252807263 is 362708252.

252807263 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.

It is a cyclic number.

It is not a de Polignac number, because 252807263 - 218 = 252545119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252807463) 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, 4077506 + ... + 4077567.

It is an arithmetic number, because the mean of its divisors is an integer number (65240592).

Almost surely, 2252807263 is an apocalyptic number.

252807263 is a deficient number, since it is larger than the sum of its proper divisors (8155105).

252807263 is an equidigital number, since it uses as much as digits as its factorization.

252807263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8155104.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 252807263 is about 15899.9139305847. The cubic root of 252807263 is about 632.3097069022.

The spelling of 252807263 in words is "two hundred fifty-two million, eight hundred seven thousand, two hundred sixty-three".

Divisors: 1 31 8155073 252807263