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53111530225 = 5213163420093
BaseRepresentation
bin110001011101101100…
…011010001011110001
312002002102201021200001
4301131230122023301
51332233022431400
640222112230001
73560103362305
oct613554321361
9162072637601
1053111530225
112058508a836
12a362b3b301
1350155a3c80
1427dba89d05
1515acb19a6a
hexc5db1a2f1

53111530225 has 12 divisors (see below), whose sum is σ = 70924320796. Its totient is φ = 39220822080.

The previous prime is 53111530223. The next prime is 53111530247. The reversal of 53111530225 is 52203511135.

It can be written as a sum of positive squares in 6 ways, for example, as 18919452304 + 34192077921 = 137548^2 + 184911^2 .

It is not a de Polignac number, because 53111530225 - 21 = 53111530223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53111530193 and 53111530202.

It is not an unprimeable number, because it can be changed into a prime (53111530223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81709722 + ... + 81710371.

Almost surely, 253111530225 is an apocalyptic number.

It is an amenable number.

53111530225 is a deficient number, since it is larger than the sum of its proper divisors (17812790571).

53111530225 is a wasteful number, since it uses less digits than its factorization.

53111530225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163420116 (or 163420111 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 53111530225 in words is "fifty-three billion, one hundred eleven million, five hundred thirty thousand, two hundred twenty-five".

Divisors: 1 5 13 25 65 325 163420093 817100465 2124461209 4085502325 10622306045 53111530225