461005861 has 4 divisors (see below), whose sum is σ = 461061324. Its totient is φ = 460950400.

The previous prime is 461005841. The next prime is 461005889. The reversal of 461005861 is 168500164.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 342065025 + 118940836 = 18495^2 + 10906^2 .

It is a cyclic number.

It is not a de Polignac number, because 461005861 - 2¹¹ = 461003813 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461005841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12460 + ... + 32821.

It is an arithmetic number, because the mean of its divisors is an integer number (115265331).

Almost surely, 2^461005861 is an apocalyptic number.

It is an amenable number.

461005861 is a deficient number, since it is larger than the sum of its proper divisors (55463).

461005861 is a wasteful number, since it uses less digits than its factorization.

461005861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55462.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 461005861 is about 21471.0470401422. The cubic root of 461005861 is about 772.5065117468.

The spelling of 461005861 in words is "four hundred sixty-one million, five thousand, eight hundred sixty-one".