561845080 has 32 divisors (see below), whose sum is σ = 1268492400. Its totient is φ = 223966336.

The previous prime is 561845057. The next prime is 561845107. The reversal of 561845080 is 80548165.

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, 12250 + ... + 35689.

Almost surely, 2^561845080 is an apocalyptic number.

It is an amenable number.

561845080 is an abundant number, since it is smaller than the sum of its proper divisors (706647320).

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

561845080 is a wasteful number, since it uses less digits than its factorization.

561845080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48243 (or 48239 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 561845080 is about 23703.2715041616. The cubic root of 561845080 is about 825.1613177045.

The spelling of 561845080 in words is "five hundred sixty-one million, eight hundred forty-five thousand, eighty".