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57575728085 = 522935021869
BaseRepresentation
bin110101100111110001…
…111110001111010101
312111121112220000212112
4311213301332033111
51420403341244320
642241103400405
74105531420361
oct654761761725
9174545800775
1057575728085
1122465aa7757
12b1a9bb3105
135577423875
142b029162a1
15176e9d4ec5
hexd67c7e3d5

57575728085 has 8 divisors (see below), whose sum is σ = 69121018680. Its totient is φ = 46040485824.

The previous prime is 57575728073. The next prime is 57575728097. The reversal of 57575728085 is 58082757575.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (57575728073) and next prime (57575728097).

It can be written as a sum of positive squares in 4 ways, for example, as 15976454404 + 41599273681 = 126398^2 + 203959^2 .

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 57575728085 - 28 = 57575727829 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2499470 + ... + 2522399.

It is an arithmetic number, because the mean of its divisors is an integer number (8640127335).

Almost surely, 257575728085 is an apocalyptic number.

It is an amenable number.

57575728085 is a deficient number, since it is larger than the sum of its proper divisors (11545290595).

57575728085 is a wasteful number, since it uses less digits than its factorization.

57575728085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024167.

The product of its (nonzero) digits is 27440000, while the sum is 59.

The spelling of 57575728085 in words is "fifty-seven billion, five hundred seventy-five million, seven hundred twenty-eight thousand, eighty-five".

Divisors: 1 5 2293 11465 5021869 25109345 11515145617 57575728085