561339078 has 16 divisors (see below), whose sum is σ = 1181766720. Its totient is φ = 177264936.

The previous prime is 561339049. The next prime is 561339083. The reversal of 561339078 is 870933165.

561339078 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 a congruent 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, 2461900 + ... + 2462127.

It is an arithmetic number, because the mean of its divisors is an integer number (73860420).

Almost surely, 2^561339078 is an apocalyptic number.

561339078 is an abundant number, since it is smaller than the sum of its proper divisors (620427642).

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

561339078 is a wasteful number, since it uses less digits than its factorization.

561339078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924051.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 561339078 is about 23692.5954255755. The cubic root of 561339078 is about 824.9135277595.

The spelling of 561339078 in words is "five hundred sixty-one million, three hundred thirty-nine thousand, seventy-eight".