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24161 = 37653
BaseRepresentation
bin101111001100001
31020010212
411321201
51233121
6303505
7130304
oct57141
936125
1024161
1117175
1211b95
13acc7
148b3b
15725b
hex5e61

24161 has 4 divisors (see below), whose sum is σ = 24852. Its totient is φ = 23472.

The previous prime is 24151. The next prime is 24169. The reversal of 24161 is 16142.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14161 + 10000 = 119^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 24161 - 26 = 24097 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 (24169) 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, 290 + ... + 363.

It is an arithmetic number, because the mean of its divisors is an integer number (6213).

224161 is an apocalyptic number.

It is an amenable number.

24161 is a deficient number, since it is larger than the sum of its proper divisors (691).

24161 is an equidigital number, since it uses as much as digits as its factorization.

24161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its digits is 48, while the sum is 14.

The square root of 24161 is about 155.4380905698. The cubic root of 24161 is about 28.9093483165.

The spelling of 24161 in words is "twenty-four thousand, one hundred sixty-one".

Divisors: 1 37 653 24161