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109061 = 191571
BaseRepresentation
bin11010101000000101
312112121022
4122220011
511442221
62200525
7632651
oct325005
9175538
10109061
1174a37
1253145
133a844
142ba61
15224ab
hex1aa05

109061 has 4 divisors (see below), whose sum is σ = 109824. Its totient is φ = 108300.

The previous prime is 109049. The next prime is 109063. The reversal of 109061 is 160901.

Adding to 109061 its reverse (160901), we get a palindrome (269962).

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 160901 = 1312377.

It is a cyclic number.

It is not a de Polignac number, because 109061 - 210 = 108037 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95 + ... + 476.

It is an arithmetic number, because the mean of its divisors is an integer number (27456).

2109061 is an apocalyptic number.

109061 is the 191-st octagonal number.

It is an amenable number.

109061 is a deficient number, since it is larger than the sum of its proper divisors (763).

109061 is an equidigital number, since it uses as much as digits as its factorization.

109061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 109061 is about 330.2438492993. The cubic root of 109061 is about 47.7774711035. Note that the first 3 decimals are identical.

The spelling of 109061 in words is "one hundred nine thousand, sixty-one".

Divisors: 1 191 571 109061