261046427 has 2 divisors, whose sum is σ = 261046428. Its totient is φ = 261046426.

The previous prime is 261046417. The next prime is 261046439. The reversal of 261046427 is 724640162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261046427 - 2¹⁴ = 261030043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261046393 and 261046402.

It is not a weakly prime, because it can be changed into another prime (261046417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130523213 + 130523214.

It is an arithmetic number, because the mean of its divisors is an integer number (130523214).

Almost surely, 2^261046427 is an apocalyptic number.

261046427 is a deficient number, since it is larger than the sum of its proper divisors (1).

261046427 is an equidigital number, since it uses as much as digits as its factorization.

261046427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 261046427 is about 16156.9312370883. The cubic root of 261046427 is about 639.1055433059.

Adding to 261046427 its reverse (724640162), we get a palindrome (985686589).

The spelling of 261046427 in words is "two hundred sixty-one million, forty-six thousand, four hundred twenty-seven".