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255120061 = 7322911287
BaseRepresentation
bin11110011010011…
…01001010111101
3122210001102221011
433031031022331
51010302320221
641152035221
76215325160
oct1715151275
9583042834
10255120061
11121010529
1271532b11
1340b16021
1425c4dad7
15175e61e1
hexf34d2bd

255120061 has 8 divisors (see below), whose sum is σ = 291681920. Its totient is φ = 218587248.

The previous prime is 255120031. The next prime is 255120077. The reversal of 255120061 is 160021552.

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 255120061 - 25 = 255120029 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 (255120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16960 + ... + 28246.

It is an arithmetic number, because the mean of its divisors is an integer number (36460240).

Almost surely, 2255120061 is an apocalyptic number.

It is an amenable number.

255120061 is a deficient number, since it is larger than the sum of its proper divisors (36561859).

255120061 is a wasteful number, since it uses less digits than its factorization.

255120061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14523.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 255120061 is about 15972.4782360159. The cubic root of 255120061 is about 634.2320772639.

The spelling of 255120061 in words is "two hundred fifty-five million, one hundred twenty thousand, sixty-one".

Divisors: 1 7 3229 11287 22603 79009 36445723 255120061