561028 has 12 divisors (see below), whose sum is σ = 1057420. Its totient is φ = 258912.

The previous prime is 561019. The next prime is 561047. The reversal of 561028 is 820165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 399424 = 402^2 + 632^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5343 + ... + 5446.

2⁵⁶¹⁰²⁸ is an apocalyptic number.

It is an amenable number.

561028 is a deficient number, since it is larger than the sum of its proper divisors (496392).

561028 is a wasteful number, since it uses less digits than its factorization.

561028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806 (or 10804 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 561028 is about 749.0180238152. The cubic root of 561028 is about 82.4761118472.

It can be divided in two parts, 5610 and 28, that multiplied together give a triangular number (157080 = T₅₆₀).

The spelling of 561028 in words is "five hundred sixty-one thousand, twenty-eight".