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105105001 = 763913759
BaseRepresentation
bin1100100001111…
…00011001101001
321022202212221211
412100330121221
5203401330001
614232433121
72414243401
oct620743151
9238685854
10105105001
1154368a41
122b2487a1
1318a10311
14dd5d801
159362351
hex643c669

105105001 has 4 divisors (see below), whose sum is σ = 105126400. Its totient is φ = 105083604.

The previous prime is 105104983. The next prime is 105105023. The reversal of 105105001 is 100501501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105105001 - 25 = 105104969 is a prime.

It is a super-2 number, since 2×1051050012 = 22094122470420002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105105031) 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, 760 + ... + 14518.

It is an arithmetic number, because the mean of its divisors is an integer number (26281600).

Almost surely, 2105105001 is an apocalyptic number.

It is an amenable number.

105105001 is a deficient number, since it is larger than the sum of its proper divisors (21399).

105105001 is an equidigital number, since it uses as much as digits as its factorization.

105105001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21398.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 105105001 is about 10252.0730098844. The cubic root of 105105001 is about 471.9266036046.

Adding to 105105001 its reverse (100501501), we get a palindrome (205606502).

The spelling of 105105001 in words is "one hundred five million, one hundred five thousand, one".

Divisors: 1 7639 13759 105105001