461540 has 24 divisors (see below), whose sum is σ = 991872. Its totient is φ = 180320.

The previous prime is 461521. The next prime is 461561. The reversal of 461540 is 45164.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

461540 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (41328).

2⁴⁶¹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

461540 is an abundant number, since it is smaller than the sum of its proper divisors (530332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

461540 is a wasteful number, since it uses less digits than its factorization.

461540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 461540 is about 679.3673527628. The cubic root of 461540 is about 77.2804748444.

It can be divided in two parts, 461 and 540, that added together give a palindrome (1001).

The spelling of 461540 in words is "four hundred sixty-one thousand, five hundred forty".