461569 has 2 divisors, whose sum is σ = 461570. Its totient is φ = 461568.

The previous prime is 461561. The next prime is 461581. The reversal of 461569 is 965164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374544 + 87025 = 612^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 461569 - 2³ = 461561 is a prime.

It is a super-2 number, since 2×461569² = 426091883522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 461569.

It is not a weakly prime, because it can be changed into another prime (461561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230784 + 230785.

It is an arithmetic number, because the mean of its divisors is an integer number (230785).

2⁴⁶¹⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

461569 is a deficient number, since it is larger than the sum of its proper divisors (1).

461569 is an equidigital number, since it uses as much as digits as its factorization.

461569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 461569 is about 679.3886958141. The cubic root of 461569 is about 77.2820934018.

The spelling of 461569 in words is "four hundred sixty-one thousand, five hundred sixty-nine".