561446 has 8 divisors (see below), whose sum is σ = 845640. Its totient is φ = 279568.

The previous prime is 561439. The next prime is 561461. The reversal of 561446 is 644165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×561446² = 630443221832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

561446 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290 + ... + 1098.

It is an arithmetic number, because the mean of its divisors is an integer number (105705).

2⁵⁶¹⁴⁴⁶ is an apocalyptic number.

561446 is a deficient number, since it is larger than the sum of its proper divisors (284194).

561446 is a wasteful number, since it uses less digits than its factorization.

561446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158.

The product of its digits is 2880, while the sum is 26.

The square root of 561446 is about 749.2970038643. The cubic root of 561446 is about 82.4965900029.

The spelling of 561446 in words is "five hundred sixty-one thousand, four hundred forty-six".