109435261 has 4 divisors (see below), whose sum is σ = 117853372. Its totient is φ = 101017152.

The previous prime is 109435259. The next prime is 109435279. The reversal of 109435261 is 162534901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162534901 = 991 ⋅164011.

It can be written as a sum of positive squares in 2 ways, for example, as 47183161 + 62252100 = 6869^2 + 7890^2 .

It is a cyclic number.

It is not a de Polignac number, because 109435261 - 2¹ = 109435259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109435561) 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, 4209036 + ... + 4209061.

It is an arithmetic number, because the mean of its divisors is an integer number (29463343).

Almost surely, 2^109435261 is an apocalyptic number.

It is an amenable number.

109435261 is a deficient number, since it is larger than the sum of its proper divisors (8418111).

109435261 is an equidigital number, since it uses as much as digits as its factorization.

109435261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8418110.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 109435261 is about 10461.1309618033. The cubic root of 109435261 is about 478.3206082507.

The spelling of 109435261 in words is "one hundred nine million, four hundred thirty-five thousand, two hundred sixty-one".