461591 has 4 divisors (see below), whose sum is σ = 497112. Its totient is φ = 426072.

The previous prime is 461581. The next prime is 461599. The reversal of 461591 is 195164.

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

It is a cyclic number.

It is not a de Polignac number, because 461591 - 2¹⁸ = 199447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 461591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461599) 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, 17741 + ... + 17766.

It is an arithmetic number, because the mean of its divisors is an integer number (124278).

2⁴⁶¹⁵⁹¹ is an apocalyptic number.

461591 is a deficient number, since it is larger than the sum of its proper divisors (35521).

461591 is a wasteful number, since it uses less digits than its factorization.

461591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35520.

The product of its digits is 1080, while the sum is 26.

The square root of 461591 is about 679.4048866471. The cubic root of 461591 is about 77.2833212276.

The spelling of 461591 in words is "four hundred sixty-one thousand, five hundred ninety-one".