Search a number
-
+
105018461 = 163764153
BaseRepresentation
bin1100100001001…
…11010001011101
321022121111020122
412100213101131
5203341042321
614230524325
72413433162
oct620472135
9238544218
10105018461
1154309a19
122b2066a5
13189acb02
14dd3a069
1593468ab
hex642745d

105018461 has 4 divisors (see below), whose sum is σ = 105084252. Its totient is φ = 104952672.

The previous prime is 105018449. The next prime is 105018499. The reversal of 105018461 is 164810501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164810501 = 241683861.

It can be written as a sum of positive squares in 2 ways, for example, as 56715961 + 48302500 = 7531^2 + 6950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-105018461 is a prime.

It is a super-2 number, since 2×1050184612 = 22057754301617042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105018461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105018961) 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 3 ways as a sum of consecutive naturals, for example, 30440 + ... + 33713.

It is an arithmetic number, because the mean of its divisors is an integer number (26271063).

Almost surely, 2105018461 is an apocalyptic number.

It is an amenable number.

105018461 is a deficient number, since it is larger than the sum of its proper divisors (65791).

105018461 is an equidigital number, since it uses as much as digits as its factorization.

105018461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65790.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 105018461 is about 10247.8515309308. The cubic root of 105018461 is about 471.7970450935.

Adding to 105018461 its reverse (164810501), we get a palindrome (269828962).

The spelling of 105018461 in words is "one hundred five million, eighteen thousand, four hundred sixty-one".

Divisors: 1 1637 64153 105018461