461045581 has 2 divisors, whose sum is σ = 461045582. Its totient is φ = 461045580.

The previous prime is 461045521. The next prime is 461045591. The reversal of 461045581 is 185540164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460960900 + 84681 = 21470^2 + 291^2 .

It is a cyclic number.

It is not a de Polignac number, because 461045581 - 2¹⁵ = 461012813 is a prime.

It is a super-2 number, since 2×461045581² = 425126055519255122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461045521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230522790 + 230522791.

It is an arithmetic number, because the mean of its divisors is an integer number (230522791).

Almost surely, 2^461045581 is an apocalyptic number.

It is an amenable number.

461045581 is a deficient number, since it is larger than the sum of its proper divisors (1).

461045581 is an equidigital number, since it uses as much as digits as its factorization.

461045581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 461045581 is about 21471.9719867552. The cubic root of 461045581 is about 772.5286973486.

The spelling of 461045581 in words is "four hundred sixty-one million, forty-five thousand, five hundred eighty-one".