261471467 has 2 divisors, whose sum is σ = 261471468. Its totient is φ = 261471466.

The previous prime is 261471461. The next prime is 261471479. The reversal of 261471467 is 764174162.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261471467 - 2⁴ = 261471451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 261471467.

It is not a weakly prime, because it can be changed into another prime (261471461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130735733 + 130735734.

It is an arithmetic number, because the mean of its divisors is an integer number (130735734).

Almost surely, 2^261471467 is an apocalyptic number.

261471467 is a deficient number, since it is larger than the sum of its proper divisors (1).

261471467 is an equidigital number, since it uses as much as digits as its factorization.

261471467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 261471467 is about 16170.0793751917. The cubic root of 261471467 is about 639.4522225333.

The spelling of 261471467 in words is "two hundred sixty-one million, four hundred seventy-one thousand, four hundred sixty-seven".