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105056061 = 31137139619
BaseRepresentation
bin1100100001100…
…00011100111101
321022200101211020
412100300130331
5203343243221
614231414353
72413650615
oct620603475
9238611736
10105056061
11543351a0
122b2243b9
13189c3c66
14dd49a45
159352ac6
hex643073d

105056061 has 32 divisors (see below), whose sum is σ = 158323200. Its totient is φ = 61404480.

The previous prime is 105056047. The next prime is 105056069. The reversal of 105056061 is 160650501.

It is not a de Polignac number, because 105056061 - 210 = 105055037 is a prime.

It is a super-3 number, since 3×1050560613 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105056069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169410 + ... + 170028.

It is an arithmetic number, because the mean of its divisors is an integer number (4947600).

Almost surely, 2105056061 is an apocalyptic number.

105056061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

105056061 is a deficient number, since it is larger than the sum of its proper divisors (53267139).

105056061 is a wasteful number, since it uses less digits than its factorization.

105056061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 105056061 is about 10249.6858976263. The cubic root of 105056061 is about 471.8533445671.

The spelling of 105056061 in words is "one hundred five million, fifty-six thousand, sixty-one".

Divisors: 1 3 11 33 37 111 139 407 417 619 1221 1529 1857 4587 5143 6809 15429 20427 22903 56573 68709 86041 169719 251933 258123 755799 946451 2839353 3183517 9550551 35018687 105056061