561497180 has 24 divisors (see below), whose sum is σ = 1180733568. Its totient is φ = 224296128.

The previous prime is 561497171. The next prime is 561497197. The reversal of 561497180 is 81794165.

561497180 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 7 ways as a sum of consecutive naturals, for example, 3404 + ... + 33683.

It is an arithmetic number, because the mean of its divisors is an integer number (49197232).

Almost surely, 2^561497180 is an apocalyptic number.

It is an amenable number.

561497180 is an abundant number, since it is smaller than the sum of its proper divisors (619236388).

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

561497180 is a wasteful number, since it uses less digits than its factorization.

561497180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37853 (or 37851 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 561497180 is about 23695.9317183351. The cubic root of 561497180 is about 824.9909665371.

The spelling of 561497180 in words is "five hundred sixty-one million, four hundred ninety-seven thousand, one hundred eighty".