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56030105 = 511206021
BaseRepresentation
bin1101010110111…
…1001110011001
310220102121212002
43111233032121
5103320430410
65320530345
71250151035
oct325571631
9126377762
1056030105
112969a27a
12169209b5
13b7ba011
1476271c5
154dbb7a5
hex356f399

56030105 has 4 divisors (see below), whose sum is σ = 67236132. Its totient is φ = 44824080.

The previous prime is 56030101. The next prime is 56030111. The reversal of 56030105 is 50103065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50103065 = 510020613.

It can be written as a sum of positive squares in 2 ways, for example, as 23892544 + 32137561 = 4888^2 + 5669^2 .

It is not a de Polignac number, because 56030105 - 22 = 56030101 is a prime.

It is a super-2 number, since 2×560301052 = 6278745332622050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56030101) 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, 5603006 + ... + 5603015.

It is an arithmetic number, because the mean of its divisors is an integer number (16809033).

Almost surely, 256030105 is an apocalyptic number.

It is an amenable number.

56030105 is a deficient number, since it is larger than the sum of its proper divisors (11206027).

56030105 is a wasteful number, since it uses less digits than its factorization.

56030105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11206026.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 56030105 is about 7485.3259782056. The cubic root of 56030105 is about 382.6547823600.

The spelling of 56030105 in words is "fifty-six million, thirty thousand, one hundred five".

Divisors: 1 5 11206021 56030105