51042012 has 48 divisors (see below), whose sum is σ = 137770752. Its totient is φ = 14405760.

The previous prime is 51041957. The next prime is 51042053. The reversal of 51042012 is 21024015.

It is a junction number, because it is equal to n+sod(n) for n = 51041982 and 51042000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3312 + ... + 10632.

It is an arithmetic number, because the mean of its divisors is an integer number (2870224).

Almost surely, 2^51042012 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 51042012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68885376).

51042012 is an abundant number, since it is smaller than the sum of its proper divisors (86728740).

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

51042012 is a wasteful number, since it uses less digits than its factorization.

51042012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418 (or 7416 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 51042012 is about 7144.3692513755. The cubic root of 51042012 is about 370.9447780969.

Adding to 51042012 its reverse (21024015), we get a palindrome (72066027).

The spelling of 51042012 in words is "fifty-one million, forty-two thousand, twelve".