5811012 has 72 divisors (see below), whose sum is σ = 15654912. Its totient is φ = 1814400.

The previous prime is 5811011. The next prime is 5811061. The reversal of 5811012 is 2101185.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (5811011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45693 + ... + 45819.

Almost surely, 2^5811012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5811012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7827456).

5811012 is an abundant number, since it is smaller than the sum of its proper divisors (9843900).

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

5811012 is a wasteful number, since it uses less digits than its factorization.

5811012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 5811012 is about 2410.6040736712. The cubic root of 5811012 is about 179.7838145327.

Adding to 5811012 its reverse (2101185), we get a palindrome (7912197).

The spelling of 5811012 in words is "five million, eight hundred eleven thousand, twelve".