261456341 has 4 divisors (see below), whose sum is σ = 272824032. Its totient is φ = 250088652.

The previous prime is 261456329. The next prime is 261456343. The reversal of 261456341 is 143654162.

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.

It is a cyclic number.

It is not a de Polignac number, because 261456341 - 2¹⁰ = 261455317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 261456298 and 261456307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261456343) 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, 5683811 + ... + 5683856.

It is an arithmetic number, because the mean of its divisors is an integer number (68206008).

Almost surely, 2^261456341 is an apocalyptic number.

It is an amenable number.

261456341 is a deficient number, since it is larger than the sum of its proper divisors (11367691).

261456341 is a wasteful number, since it uses less digits than its factorization.

261456341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11367690.

The product of its digits is 17280, while the sum is 32.

The square root of 261456341 is about 16169.6116527269. The cubic root of 261456341 is about 639.4398916265.

The spelling of 261456341 in words is "two hundred sixty-one million, four hundred fifty-six thousand, three hundred forty-one".