108181261 has 2 divisors, whose sum is σ = 108181262. Its totient is φ = 108181260.

The previous prime is 108181253. The next prime is 108181291. The reversal of 108181261 is 162181801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65853225 + 42328036 = 8115^2 + 6506^2 .

It is a cyclic number.

It is not a de Polignac number, because 108181261 - 2³ = 108181253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108181211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54090630 + 54090631.

It is an arithmetic number, because the mean of its divisors is an integer number (54090631).

Almost surely, 2^108181261 is an apocalyptic number.

It is an amenable number.

108181261 is a deficient number, since it is larger than the sum of its proper divisors (1).

108181261 is an equidigital number, since it uses as much as digits as its factorization.

108181261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 108181261 is about 10401.0221132348. The cubic root of 108181261 is about 476.4865869608.

The spelling of 108181261 in words is "one hundred eight million, one hundred eighty-one thousand, two hundred sixty-one".