56133012 has 72 divisors (see below), whose sum is σ = 143881920. Its totient is φ = 17022720.

The previous prime is 56132981. The next prime is 56133019. The reversal of 56133012 is 21033165.

It is a self number, because there is not a number n which added to its sum of digits gives 56133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56133019) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 180337 + ... + 180647.

It is an arithmetic number, because the mean of its divisors is an integer number (1998360).

Almost surely, 2^56133012 is an apocalyptic number.

56133012 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56133012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71940960).

56133012 is an abundant number, since it is smaller than the sum of its proper divisors (87748908).

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

56133012 is a wasteful number, since it uses less digits than its factorization.

56133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 56133012 is about 7492.1967406095. The cubic root of 56133012 is about 382.8889051448. Note that the first 3 decimals are identical.

Adding to 56133012 its reverse (21033165), we get a palindrome (77166177).

The spelling of 56133012 in words is "fifty-six million, one hundred thirty-three thousand, twelve".