561913400 has 24 divisors (see below), whose sum is σ = 1306449120. Its totient is φ = 224765280.

The previous prime is 561913369. The next prime is 561913411. The reversal of 561913400 is 4319165.

561913400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1404584 + ... + 1404983.

It is an arithmetic number, because the mean of its divisors is an integer number (54435380).

Almost surely, 2^561913400 is an apocalyptic number.

561913400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

561913400 is an abundant number, since it is smaller than the sum of its proper divisors (744535720).

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

561913400 is a wasteful number, since it uses less digits than its factorization.

561913400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809583 (or 2809574 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 561913400 is about 23704.7126116306. The cubic root of 561913400 is about 825.1947627106.

The spelling of 561913400 in words is "five hundred sixty-one million, nine hundred thirteen thousand, four hundred".