465016561 has 4 divisors (see below), whose sum is σ = 467704692. Its totient is φ = 462328432.

The previous prime is 465016549. The next prime is 465016579. The reversal of 465016561 is 165610564.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286286400 + 178730161 = 16920^2 + 13369^2 .

It is a cyclic number.

It is not a de Polignac number, because 465016561 - 2⁵ = 465016529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (465016511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343806 + ... + 1344151.

It is an arithmetic number, because the mean of its divisors is an integer number (116926173).

Almost surely, 2^465016561 is an apocalyptic number.

It is an amenable number.

465016561 is a deficient number, since it is larger than the sum of its proper divisors (2688131).

465016561 is a wasteful number, since it uses less digits than its factorization.

465016561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688130.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 465016561 is about 21564.2426484215. The cubic root of 465016561 is about 774.7402867535.

The spelling of 465016561 in words is "four hundred sixty-five million, sixteen thousand, five hundred sixty-one".