109716261 has 4 divisors (see below), whose sum is σ = 146288352. Its totient is φ = 73144172.

The previous prime is 109716259. The next prime is 109716301. The reversal of 109716261 is 162617901.

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 an emirpimes, since its reverse is a distinct semiprime: 162617901 = 3 ⋅54205967.

It is a cyclic number.

It is not a de Polignac number, because 109716261 - 2¹ = 109716259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109716221) 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 in 3 ways as a sum of consecutive naturals, for example, 18286041 + ... + 18286046.

It is an arithmetic number, because the mean of its divisors is an integer number (36572088).

Almost surely, 2^109716261 is an apocalyptic number.

It is an amenable number.

109716261 is a deficient number, since it is larger than the sum of its proper divisors (36572091).

109716261 is an equidigital number, since it uses as much as digits as its factorization.

109716261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36572090.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 109716261 is about 10474.5530214897. The cubic root of 109716261 is about 478.7296574377.

The spelling of 109716261 in words is "one hundred nine million, seven hundred sixteen thousand, two hundred sixty-one".