561472 has 28 divisors (see below), whose sum is σ = 1154176. Its totient is φ = 270720.

The previous prime is 561461. The next prime is 561521. The reversal of 561472 is 274165.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843 + ... + 2125.

2⁵⁶¹⁴⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577088).

561472 is an abundant number, since it is smaller than the sum of its proper divisors (592704).

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

561472 is a wasteful number, since it uses less digits than its factorization.

561472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 316 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 561472 is about 749.3143532590. The cubic root of 561472 is about 82.4978634280.

The spelling of 561472 in words is "five hundred sixty-one thousand, four hundred seventy-two".