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53055228257 = 66897931713
BaseRepresentation
bin110001011010010101…
…101000100101100001
312001221111202211212222
4301122111220211201
51332124114301012
640212341400425
73555520666523
oct613225504541
9161844684788
1053055228257
1120556325289
12a348109115
135006a202b5
1427d43d1a13
1515a7be7972
hexc5a568961

53055228257 has 4 divisors (see below), whose sum is σ = 53063166660. Its totient is φ = 53047289856.

The previous prime is 53055228251. The next prime is 53055228283. The reversal of 53055228257 is 75282255035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46352367616 + 6702860641 = 215296^2 + 81871^2 .

It is a cyclic number.

It is not a de Polignac number, because 53055228257 - 214 = 53055211873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53055228251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3959168 + ... + 3972545.

It is an arithmetic number, because the mean of its divisors is an integer number (13265791665).

Almost surely, 253055228257 is an apocalyptic number.

It is an amenable number.

53055228257 is a deficient number, since it is larger than the sum of its proper divisors (7938403).

53055228257 is an equidigital number, since it uses as much as digits as its factorization.

53055228257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7938402.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 53055228257 in words is "fifty-three billion, fifty-five million, two hundred twenty-eight thousand, two hundred fifty-seven".

Divisors: 1 6689 7931713 53055228257