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255471161 = 11137169523
BaseRepresentation
bin11110011101000…
…10111000111001
3122210201021112212
433032202320321
51010400034121
641203344505
76221316611
oct1716427071
9583637485
10255471161
111212302a0
1271682135
1340c09a8a
1425d01a41
151766525b
hexf3a2e39

255471161 has 8 divisors (see below), whose sum is σ = 280731744. Its totient is φ = 230549920.

The previous prime is 255471157. The next prime is 255471187. The reversal of 255471161 is 161174552.

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 255471161 - 22 = 255471157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255471101) 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, 83255 + ... + 86268.

It is an arithmetic number, because the mean of its divisors is an integer number (35091468).

Almost surely, 2255471161 is an apocalyptic number.

It is an amenable number.

255471161 is a deficient number, since it is larger than the sum of its proper divisors (25260583).

255471161 is a wasteful number, since it uses less digits than its factorization.

255471161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169671.

The product of its digits is 8400, while the sum is 32.

The square root of 255471161 is about 15983.4652375510. The cubic root of 255471161 is about 634.5228904182.

The spelling of 255471161 in words is "two hundred fifty-five million, four hundred seventy-one thousand, one hundred sixty-one".

Divisors: 1 11 137 1507 169523 1864753 23224651 255471161