561036 has 24 divisors (see below), whose sum is σ = 1496320. Its totient is φ = 160272.

The previous prime is 561019. The next prime is 561047. The reversal of 561036 is 630165.

It is a super-2 number, since 2×561036² = 629522786592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3256 + ... + 3423.

2⁵⁶¹⁰³⁶ is an apocalyptic number.

It is an amenable number.

561036 is an abundant number, since it is smaller than the sum of its proper divisors (935284).

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

561036 is a wasteful number, since it uses less digits than its factorization.

561036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6693 (or 6691 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 561036 is about 749.0233641216. The cubic root of 561036 is about 82.4765038690.

The spelling of 561036 in words is "five hundred sixty-one thousand, thirty-six".