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161207 = 2343163
BaseRepresentation
bin100111010110110111
322012010122
4213112313
520124312
63242155
71240664
oct472667
9265118
10161207
11100132
127935b
13584b7
1442a6b
1532b72
hex275b7

161207 has 8 divisors (see below), whose sum is σ = 173184. Its totient is φ = 149688.

The previous prime is 161201. The next prime is 161221. The reversal of 161207 is 702161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 161207 - 210 = 160183 is a prime.

It is a Duffinian number.

161207 is a modest number, since divided by 207 gives 161 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161207.

It is not an unprimeable number, because it can be changed into a prime (161201) 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, 908 + ... + 1070.

It is an arithmetic number, because the mean of its divisors is an integer number (21648).

2161207 is an apocalyptic number.

161207 is a deficient number, since it is larger than the sum of its proper divisors (11977).

161207 is a wasteful number, since it uses less digits than its factorization.

161207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 161207 is about 401.5059152740. The cubic root of 161207 is about 54.4245230770.

Adding to 161207 its reverse (702161), we get a palindrome (863368).

The spelling of 161207 in words is "one hundred sixty-one thousand, two hundred seven".

Divisors: 1 23 43 163 989 3749 7009 161207