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10172005 = 59072243
BaseRepresentation
bin100110110011…
…011001100101
3201010210100221
4212303121211
510101001010
61002004341
7152313664
oct46633145
921123327
1010172005
115818418
1234a66b1
132151c4c
1414caddb
15d5ddda
hex9b3665

10172005 has 8 divisors (see below), whose sum is σ = 12225312. Its totient is φ = 8125008.

The previous prime is 10171991. The next prime is 10172017. The reversal of 10172005 is 50027101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10172005 is a prime.

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 10172005.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3414 + ... + 5656.

It is an arithmetic number, because the mean of its divisors is an integer number (1528164).

Almost surely, 210172005 is an apocalyptic number.

It is an amenable number.

10172005 is a deficient number, since it is larger than the sum of its proper divisors (2053307).

10172005 is an equidigital number, since it uses as much as digits as its factorization.

10172005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 10172005 is about 3189.3580858850. The cubic root of 10172005 is about 216.6716987654.

Adding to 10172005 its reverse (50027101), we get a palindrome (60199106).

The spelling of 10172005 in words is "ten million, one hundred seventy-two thousand, five".

Divisors: 1 5 907 2243 4535 11215 2034401 10172005