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248255161 = 71131104003
BaseRepresentation
bin11101100110000…
…01001010111001
3122022010200001121
432303001022321
51002023131121
640344545241
76103063660
oct1663011271
9568120047
10248255161
11118151860
126b182221
133c58145b
1424d83dd7
1516bdc141
hexecc12b9

248255161 has 16 divisors (see below), whose sum is σ = 319500288. Its totient is φ = 187203600.

The previous prime is 248255149. The next prime is 248255171. The reversal of 248255161 is 161552842.

It is a happy number.

248255161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 248255161 - 215 = 248222393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248255141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49615 + ... + 54388.

It is an arithmetic number, because the mean of its divisors is an integer number (19968768).

Almost surely, 2248255161 is an apocalyptic number.

It is an amenable number.

248255161 is a deficient number, since it is larger than the sum of its proper divisors (71245127).

248255161 is a wasteful number, since it uses less digits than its factorization.

248255161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104052.

The product of its digits is 19200, while the sum is 34.

The square root of 248255161 is about 15756.1150351221. The cubic root of 248255161 is about 628.4915291570.

The spelling of 248255161 in words is "two hundred forty-eight million, two hundred fifty-five thousand, one hundred sixty-one".

Divisors: 1 7 11 31 77 217 341 2387 104003 728021 1144033 3224093 8008231 22568651 35465023 248255161