465581 has 2 divisors, whose sum is σ = 465582. Its totient is φ = 465580.

The previous prime is 465551. The next prime is 465587. The reversal of 465581 is 185564.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354025 + 111556 = 595^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 465581 - 2¹⁰ = 464557 is a prime.

It is a super-2 number, since 2×465581² = 433531335122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (465587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232790 + 232791.

It is an arithmetic number, because the mean of its divisors is an integer number (232791).

2⁴⁶⁵⁵⁸¹ is an apocalyptic number.

It is an amenable number.

465581 is a deficient number, since it is larger than the sum of its proper divisors (1).

465581 is an equidigital number, since it uses as much as digits as its factorization.

465581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 465581 is about 682.3349617307. The cubic root of 465581 is about 77.5053620986.

The spelling of 465581 in words is "four hundred sixty-five thousand, five hundred eighty-one".