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71061 = 323687
BaseRepresentation
bin10001010110010101
310121110220
4101112111
54233221
61304553
7414114
oct212625
9117426
1071061
1149431
1235159
1326463
141bc7b
15160c6
hex11595

71061 has 4 divisors (see below), whose sum is σ = 94752. Its totient is φ = 47372.

The previous prime is 71059. The next prime is 71069. The reversal of 71061 is 16017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71061 - 21 = 71059 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11841 + ... + 11846.

It is an arithmetic number, because the mean of its divisors is an integer number (23688).

271061 is an apocalyptic number.

It is an amenable number.

71061 is a deficient number, since it is larger than the sum of its proper divisors (23691).

71061 is a wasteful number, since it uses less digits than its factorization.

71061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690.

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

The square root of 71061 is about 266.5726917747. The cubic root of 71061 is about 41.4200327796.

Adding to 71061 its reverse (16017), we get a palindrome (87078).

The spelling of 71061 in words is "seventy-one thousand, sixty-one".

Divisors: 1 3 23687 71061