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105538894 = 252769447
BaseRepresentation
bin1100100101001…
…10010101001110
321100120221010221
412102212111032
5204004221034
614250021554
72421031366
oct622462516
9240527127
10105538894
1154634a2a
122b4178ba
1318b32966
14100339a6
1593eabb4
hex64a654e

105538894 has 4 divisors (see below), whose sum is σ = 158308344. Its totient is φ = 52769446.

The previous prime is 105538891. The next prime is 105538897. The reversal of 105538894 is 498835501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498835501 = 598454839.

It is an interprime number because it is at equal distance from previous prime (105538891) and next prime (105538897).

It is a super-5 number, since 5×1055388945 (a number of 41 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 105538894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105538891) 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 as a sum of consecutive naturals, namely, 26384722 + ... + 26384725.

It is an arithmetic number, because the mean of its divisors is an integer number (39577086).

Almost surely, 2105538894 is an apocalyptic number.

105538894 is a deficient number, since it is larger than the sum of its proper divisors (52769450).

105538894 is an equidigital number, since it uses as much as digits as its factorization.

105538894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52769449.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 105538894 is about 10273.2124479152. The cubic root of 105538894 is about 472.5751123089.

The spelling of 105538894 in words is "one hundred five million, five hundred thirty-eight thousand, eight hundred ninety-four".

Divisors: 1 2 52769447 105538894