56105012 has 12 divisors (see below), whose sum is σ = 99367296. Its totient is φ = 27714360.

The previous prime is 56105003. The next prime is 56105017. The reversal of 56105012 is 21050165.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56105017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84164 + ... + 84827.

It is an arithmetic number, because the mean of its divisors is an integer number (8280608).

Almost surely, 2^56105012 is an apocalyptic number.

It is an amenable number.

56105012 is a deficient number, since it is larger than the sum of its proper divisors (43262284).

56105012 is a wasteful number, since it uses less digits than its factorization.

56105012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169078 (or 169076 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 56105012 is about 7490.3278966945. The cubic root of 56105012 is about 382.8252309535.

Adding to 56105012 its reverse (21050165), we get a palindrome (77155177).

The spelling of 56105012 in words is "fifty-six million, one hundred five thousand, twelve".