51103836 has 144 divisors (see below), whose sum is σ = 159344640. Its totient is φ = 13478400.

The previous prime is 51103817. The next prime is 51103849. The reversal of 51103836 is 63830115.

It is a super-2 number, since 2×51103836² = 5223204107829792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 338361 + ... + 338511.

It is an arithmetic number, because the mean of its divisors is an integer number (1106560).

Almost surely, 2^51103836 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 51103836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79672320).

51103836 is an abundant number, since it is smaller than the sum of its proper divisors (108240804).

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

51103836 is a wasteful number, since it uses less digits than its factorization.

51103836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51103836 is about 7148.6947060285. The cubic root of 51103836 is about 371.0944850806.

The spelling of 51103836 in words is "fifty-one million, one hundred three thousand, eight hundred thirty-six".