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BaseRepresentation
bin100111010100101111
322011221121
4213110233
520123241
63241411
71240411
oct472457
9264847
10161071
11100019
1279267
1358411
14429b1
hex2752f

161071 has 2 divisors, whose sum is σ = 161072. Its totient is φ = 161070.

The previous prime is 161059. The next prime is 161087. The reversal of 161071 is 170161.

It can be divided in two parts, 1610 and 71, that added together give a square (1681 = 412).

It is an a-pointer prime, because the next prime (161087) can be obtained adding 161071 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161071 - 25 = 161039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80535 + 80536.

It is an arithmetic number, because the mean of its divisors is an integer number (80536).

2161071 is an apocalyptic number.

161071 is a deficient number, since it is larger than the sum of its proper divisors (1).

161071 is an equidigital number, since it uses as much as digits as its factorization.

161071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 161071 is about 401.3365171524. The cubic root of 161071 is about 54.4092139454.

The spelling of 161071 in words is "one hundred sixty-one thousand, seventy-one".