561248 has 12 divisors (see below), whose sum is σ = 1105020. Its totient is φ = 280608.

The previous prime is 561229. The next prime is 561251. The reversal of 561248 is 842165.

It is a congruent number.

It is an unprimeable number.

561248 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 (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8738 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (92085).

2⁵⁶¹²⁴⁸ is an apocalyptic number.

It is an amenable number.

561248 is a deficient number, since it is larger than the sum of its proper divisors (543772).

561248 is a wasteful number, since it uses less digits than its factorization.

561248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17549 (or 17541 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 561248 is about 749.1648683701. The cubic root of 561248 is about 82.4868910913.

It can be divided in two parts, 561 and 248, that multiplied together give a triangular number (139128 = T₅₂₇).

The spelling of 561248 in words is "five hundred sixty-one thousand, two hundred forty-eight".