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80197 = 1331199
BaseRepresentation
bin10011100101000101
311002000021
4103211011
510031242
61415141
7452545
oct234505
9132007
1080197
1155287
123a4b1
132a670
1421325
1518b67
hex13945

80197 has 8 divisors (see below), whose sum is σ = 89600. Its totient is φ = 71280.

The previous prime is 80191. The next prime is 80207. The reversal of 80197 is 79108.

Subtracting from 80197 its reverse (79108), we obtain a square (1089 = 332).

It can be divided in two parts, 801 and 97, that added together give a palindrome (898).

80197 is nontrivially palindromic in base 6.

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-80197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (11200).

280197 is an apocalyptic number.

80197 is the 164-th hex number.

It is an amenable number.

80197 is a deficient number, since it is larger than the sum of its proper divisors (9403).

80197 is a wasteful number, since it uses less digits than its factorization.

80197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 80197 is about 283.1907484365. The cubic root of 80197 is about 43.1240334447.

The spelling of 80197 in words is "eighty thousand, one hundred ninety-seven".

Divisors: 1 13 31 199 403 2587 6169 80197