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172013301 = 349721893
BaseRepresentation
bin10100100000010…
…11011011110101
3102222200011220000
422100023123311
5323013411201
625022501513
74156042335
oct1220133365
9388604800
10172013301
1189108159
1249734899
1329838825
1418bb90c5
151017bd86
hexa40b6f5

172013301 has 20 divisors (see below), whose sum is σ = 259619052. Its totient is φ = 113488128.

The previous prime is 172013269. The next prime is 172013323. The reversal of 172013301 is 103310271.

172013301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 104346225 + 67667076 = 10215^2 + 8226^2 .

It is not a de Polignac number, because 172013301 - 25 = 172013269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172013801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3090 + ... + 18803.

Almost surely, 2172013301 is an apocalyptic number.

It is an amenable number.

172013301 is a deficient number, since it is larger than the sum of its proper divisors (87605751).

172013301 is an equidigital number, since it uses as much as digits as its factorization.

172013301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22002 (or 21993 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 172013301 is about 13115.3841346718. The cubic root of 172013301 is about 556.1441117132.

Adding to 172013301 its reverse (103310271), we get a palindrome (275323572).

It can be divided in two parts, 17201 and 3301, that added together give a palindrome (20502).

The spelling of 172013301 in words is "one hundred seventy-two million, thirteen thousand, three hundred one".

Divisors: 1 3 9 27 81 97 291 873 2619 7857 21893 65679 197037 591111 1773333 2123621 6370863 19112589 57337767 172013301