561294944 has 48 divisors (see below), whose sum is σ = 1317835008. Its totient is φ = 230093952.

The previous prime is 561294931. The next prime is 561294949. The reversal of 561294944 is 449492165.

It is a junction number, because it is equal to n+sod(n) for n = 561294895 and 561294904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561294949) 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, 49322 + ... + 59625.

It is an arithmetic number, because the mean of its divisors is an integer number (27454896).

Almost surely, 2^561294944 is an apocalyptic number.

It is an amenable number.

561294944 is an abundant number, since it is smaller than the sum of its proper divisors (756540064).

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

561294944 is a wasteful number, since it uses less digits than its factorization.

561294944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108987 (or 108979 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 561294944 is about 23691.6640192284. The cubic root of 561294944 is about 824.8919082137.

The spelling of 561294944 in words is "five hundred sixty-one million, two hundred ninety-four thousand, nine hundred forty-four".