261436041 has 6 divisors (see below), whose sum is σ = 377629850. Its totient is φ = 174290688.

The previous prime is 261436039. The next prime is 261436061. The reversal of 261436041 is 140634162.

261436041 is a `hidden beast` number, since 2 + 614 + 3 + 6 + 0 + 41 = 666.

261436041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 143496441 + 117939600 = 11979^2 + 10860^2 .

It is not a de Polignac number, because 261436041 - 2¹ = 261436039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261435996 and 261436014.

It is not an unprimeable number, because it can be changed into a prime (261436031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14524216 + ... + 14524233.

Almost surely, 2^261436041 is an apocalyptic number.

It is an amenable number.

261436041 is a deficient number, since it is larger than the sum of its proper divisors (116193809).

261436041 is a wasteful number, since it uses less digits than its factorization.

261436041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29048455 (or 29048452 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 261436041 is about 16168.9839198386. The cubic root of 261436041 is about 639.4233420620.

The spelling of 261436041 in words is "two hundred sixty-one million, four hundred thirty-six thousand, forty-one".