561812248 has 32 divisors (see below), whose sum is σ = 1063566000. Its totient is φ = 278206848.

The previous prime is 561812239. The next prime is 561812249. The reversal of 561812248 is 842218165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561812249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766090 + ... + 766822.

Almost surely, 2^561812248 is an apocalyptic number.

It is an amenable number.

561812248 is a deficient number, since it is larger than the sum of its proper divisors (501753752).

561812248 is a wasteful number, since it uses less digits than its factorization.

561812248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531 (or 1527 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 561812248 is about 23702.5789314159. The cubic root of 561812248 is about 825.1452443389.

The spelling of 561812248 in words is "five hundred sixty-one million, eight hundred twelve thousand, two hundred forty-eight".