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57000050 = 2528912809
BaseRepresentation
bin1101100101110…
…0000001110010
310222020220100222
43121130001302
5104043000200
65353413042
71261330622
oct331340162
9128226328
1057000050
112a1a1a88
121710a182
13ba69653
1477da882
15500dd85
hex365c072

57000050 has 24 divisors (see below), whose sum is σ = 107219700. Its totient is φ = 22542080.

The previous prime is 57000037. The next prime is 57000059. The reversal of 57000050 is 5000075.

It can be written as a sum of positive squares in 6 ways, for example, as 7958041 + 49042009 = 2821^2 + 7003^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56999992 and 57000028.

It is not an unprimeable number, because it can be changed into a prime (57000059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1955 + ... + 10854.

Almost surely, 257000050 is an apocalyptic number.

57000050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57000050 is a deficient number, since it is larger than the sum of its proper divisors (50219650).

57000050 is a wasteful number, since it uses less digits than its factorization.

57000050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12910 (or 12905 counting only the distinct ones).

The product of its (nonzero) digits is 175, while the sum is 17.

The square root of 57000050 is about 7549.8377466009. The cubic root of 57000050 is about 384.8502256569.

The spelling of 57000050 in words is "fifty-seven million, fifty", and thus it is an aban number and an uban number.

Divisors: 1 2 5 10 25 50 89 178 445 890 2225 4450 12809 25618 64045 128090 320225 640450 1140001 2280002 5700005 11400010 28500025 57000050