261479041 has 4 divisors (see below), whose sum is σ = 261875284. Its totient is φ = 261082800.

The previous prime is 261479027. The next prime is 261479069. The reversal of 261479041 is 140974162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79121025 + 182358016 = 8895^2 + 13504^2 .

It is a cyclic number.

It is not a de Polignac number, because 261479041 - 2⁷ = 261478913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261478988 and 261479006.

It is not an unprimeable number, because it can be changed into a prime (261479021) 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, 197130 + ... + 198451.

It is an arithmetic number, because the mean of its divisors is an integer number (65468821).

Almost surely, 2^261479041 is an apocalyptic number.

It is an amenable number.

261479041 is a deficient number, since it is larger than the sum of its proper divisors (396243).

261479041 is an equidigital number, since it uses as much as digits as its factorization.

261479041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396242.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 261479041 is about 16170.3135714803. The cubic root of 261479041 is about 639.4583967753.

The spelling of 261479041 in words is "two hundred sixty-one million, four hundred seventy-nine thousand, forty-one".