561550074 has 16 divisors (see below), whose sum is σ = 1126322400. Its totient is φ = 186646320.

The previous prime is 561550061. The next prime is 561550097. The reversal of 561550074 is 470055165.

561550074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131992 + ... + 136179.

It is an arithmetic number, because the mean of its divisors is an integer number (70395150).

Almost surely, 2^561550074 is an apocalyptic number.

561550074 is an abundant number, since it is smaller than the sum of its proper divisors (564772326).

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

561550074 is a wasteful number, since it uses less digits than its factorization.

561550074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268525.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 561550074 is about 23697.0477908114. The cubic root of 561550074 is about 825.0168709130.

The spelling of 561550074 in words is "five hundred sixty-one million, five hundred fifty thousand, seventy-four".