561480 has 32 divisors (see below), whose sum is σ = 1684800. Its totient is φ = 149696.

The previous prime is 561461. The next prime is 561521. The reversal of 561480 is 84165.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 561480.

It is an unprimeable number.

561480 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, 2220 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (52650).

2⁵⁶¹⁴⁸⁰ is an apocalyptic number.

It is an amenable number.

561480 is an abundant number, since it is smaller than the sum of its proper divisors (1123320).

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

561480 is a wasteful number, since it uses less digits than its factorization.

561480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693 (or 4689 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 561480 is about 749.3196914535. The cubic root of 561480 is about 82.4982552432.

The spelling of 561480 in words is "five hundred sixty-one thousand, four hundred eighty".