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255223513 = 626340751
BaseRepresentation
bin11110011011001…
…10011011011001
3122210020200211201
433031212123121
51010314123023
641154154201
76216235606
oct1715463331
9583220751
10255223513
11121081226
1271582961
1340b5113c
1425c796ad
1517616bad
hexf3666d9

255223513 has 4 divisors (see below), whose sum is σ = 255270528. Its totient is φ = 255176500.

The previous prime is 255223481. The next prime is 255223517. The reversal of 255223513 is 315322552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255223513 - 25 = 255223481 is a prime.

It is a super-2 number, since 2×2552235132 = 130278083176122338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255223517) 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 3 ways as a sum of consecutive naturals, for example, 14113 + ... + 26638.

It is an arithmetic number, because the mean of its divisors is an integer number (63817632).

Almost surely, 2255223513 is an apocalyptic number.

It is an amenable number.

255223513 is a deficient number, since it is larger than the sum of its proper divisors (47015).

255223513 is an equidigital number, since it uses as much as digits as its factorization.

255223513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47014.

The product of its digits is 9000, while the sum is 28.

The square root of 255223513 is about 15975.7163532657. The cubic root of 255223513 is about 634.3177933902.

The spelling of 255223513 in words is "two hundred fifty-five million, two hundred twenty-three thousand, five hundred thirteen".

Divisors: 1 6263 40751 255223513