491461 has 2 divisors, whose sum is σ = 491462. Its totient is φ = 491460.

The previous prime is 491429. The next prime is 491483. The reversal of 491461 is 164194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260100 + 231361 = 510^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 491461 - 2⁵ = 491429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245730 + 245731.

It is an arithmetic number, because the mean of its divisors is an integer number (245731).

2⁴⁹¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

491461 is a deficient number, since it is larger than the sum of its proper divisors (1).

491461 is an equidigital number, since it uses as much as digits as its factorization.

491461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 491461 is about 701.0427946994. The cubic root of 491461 is about 78.9156285588.

The spelling of 491461 in words is "four hundred ninety-one thousand, four hundred sixty-one".