461087261 has 2 divisors, whose sum is σ = 461087262. Its totient is φ = 461087260.

The previous prime is 461087257. The next prime is 461087281. The reversal of 461087261 is 162780164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440202361 + 20884900 = 20981^2 + 4570^2 .

It is a cyclic number.

It is not a de Polignac number, because 461087261 - 2² = 461087257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461087281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230543630 + 230543631.

It is an arithmetic number, because the mean of its divisors is an integer number (230543631).

Almost surely, 2^461087261 is an apocalyptic number.

It is an amenable number.

461087261 is a deficient number, since it is larger than the sum of its proper divisors (1).

461087261 is an equidigital number, since it uses as much as digits as its factorization.

461087261 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 35.

The square root of 461087261 is about 21472.9425324058. The cubic root of 461087261 is about 772.5519763382.

The spelling of 461087261 in words is "four hundred sixty-one million, eighty-seven thousand, two hundred sixty-one".