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161007 = 37111741
BaseRepresentation
bin100111010011101111
322011212020
4213103233
520123012
63241223
71240260
oct472357
9264766
10161007
11aaa70
1279213
1358392
1442967
1532a8c
hex274ef

161007 has 32 divisors (see below), whose sum is σ = 290304. Its totient is φ = 76800.

The previous prime is 160997. The next prime is 161009. The reversal of 161007 is 700161.

Adding to 161007 its reverse (700161), we get a palindrome (861168).

It is not a de Polignac number, because 161007 - 27 = 160879 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3907 + ... + 3947.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2161007 is an apocalyptic number.

161007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

161007 is a deficient number, since it is larger than the sum of its proper divisors (129297).

161007 is a wasteful number, since it uses less digits than its factorization.

161007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 161007 is about 401.2567756437. The cubic root of 161007 is about 54.4020066662.

The spelling of 161007 in words is "one hundred sixty-one thousand, seven".

Divisors: 1 3 7 11 17 21 33 41 51 77 119 123 187 231 287 357 451 561 697 861 1309 1353 2091 3157 3927 4879 7667 9471 14637 23001 53669 161007