561238 has 12 divisors (see below), whose sum is σ = 895212. Its totient is φ = 263840.

The previous prime is 561229. The next prime is 561251. The reversal of 561238 is 832165.

It is a happy number.

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 (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (74601).

2⁵⁶¹²³⁸ is an apocalyptic number.

561238 is a deficient number, since it is larger than the sum of its proper divisors (333974).

561238 is a wasteful number, since it uses less digits than its factorization.

561238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 990 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 561238 is about 749.1581942420. The cubic root of 561238 is about 82.4864011868.

The spelling of 561238 in words is "five hundred sixty-one thousand, two hundred thirty-eight".