561627156 has 48 divisors (see below), whose sum is σ = 1439424000. Its totient is φ = 169643232.

The previous prime is 561627127. The next prime is 561627163. The reversal of 561627156 is 651726165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48306 + ... + 58793.

It is an arithmetic number, because the mean of its divisors is an integer number (29988000).

Almost surely, 2^561627156 is an apocalyptic number.

It is an amenable number.

561627156 is an abundant number, since it is smaller than the sum of its proper divisors (877796844).

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

561627156 is a wasteful number, since it uses less digits than its factorization.

561627156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107148 (or 107146 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 561627156 is about 23698.6741401286. The cubic root of 561627156 is about 825.0546182389.

Subtracting 561627156 from its reverse (651726165), we obtain a palindrome (90099009).

The spelling of 561627156 in words is "five hundred sixty-one million, six hundred twenty-seven thousand, one hundred fifty-six".