561903824 has 10 divisors (see below), whose sum is σ = 1088688690. Its totient is φ = 280951904.

The previous prime is 561903817. The next prime is 561903851. The reversal of 561903824 is 428309165.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 546063424 + 15840400 = 23368^2 + 3980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17559479 + ... + 17559510.

It is an arithmetic number, because the mean of its divisors is an integer number (108868869).

Almost surely, 2^561903824 is an apocalyptic number.

It is an amenable number.

561903824 is a deficient number, since it is larger than the sum of its proper divisors (526784866).

561903824 is a wasteful number, since it uses less digits than its factorization.

561903824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35118997 (or 35118991 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 561903824 is about 23704.5106256172. The cubic root of 561903824 is about 825.1900750903.

The spelling of 561903824 in words is "five hundred sixty-one million, nine hundred three thousand, eight hundred twenty-four".