261164141 has 8 divisors (see below), whose sum is σ = 298910784. Its totient is φ = 223526880.

The previous prime is 261164129. The next prime is 261164153. The reversal of 261164141 is 141461162.

261164141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (261164129) and next prime (261164153).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261164141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 261164141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261164161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22160 + ... + 31833.

It is an arithmetic number, because the mean of its divisors is an integer number (37363848).

Almost surely, 2^261164141 is an apocalyptic number.

It is an amenable number.

261164141 is a deficient number, since it is larger than the sum of its proper divisors (37746643).

261164141 is an equidigital number, since it uses as much as digits as its factorization.

261164141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54691.

The product of its digits is 1152, while the sum is 26.

The square root of 261164141 is about 16160.5736593724. The cubic root of 261164141 is about 639.2015930974.

The spelling of 261164141 in words is "two hundred sixty-one million, one hundred sixty-four thousand, one hundred forty-one".