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253985147 = 1359331141
BaseRepresentation
bin11110010001110…
…00000101111011
3122200220210010022
433020320011323
51010010011042
641111441055
76202560323
oct1710700573
9580823108
10253985147
11120405889
127108618b
1340809590
1425a36283
151746ecd2
hexf23817b

253985147 has 8 divisors (see below), whose sum is σ = 278159280. Its totient is φ = 230473440.

The previous prime is 253985129. The next prime is 253985153. The reversal of 253985147 is 741589352.

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

It is a cyclic number.

It is not a de Polignac number, because 253985147 - 212 = 253981051 is a prime.

It is a super-2 number, since 2×2539851472 = 129016909793223218, 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 = 253985098 and 253985107.

It is not an unprimeable number, because it can be changed into a prime (253985107) 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, 164804 + ... + 166337.

It is an arithmetic number, because the mean of its divisors is an integer number (34769910).

Almost surely, 2253985147 is an apocalyptic number.

253985147 is a deficient number, since it is larger than the sum of its proper divisors (24174133).

253985147 is a wasteful number, since it uses less digits than its factorization.

253985147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331213.

The product of its digits is 302400, while the sum is 44.

The square root of 253985147 is about 15936.9114636431. The cubic root of 253985147 is about 633.2902084825.

The spelling of 253985147 in words is "two hundred fifty-three million, nine hundred eighty-five thousand, one hundred forty-seven".

Divisors: 1 13 59 767 331141 4304833 19537319 253985147