51943836 has 96 divisors (see below), whose sum is σ = 144506880. Its totient is φ = 14215104.

The previous prime is 51943811. The next prime is 51943861. The reversal of 51943836 is 63834915.

It is an interprime number because it is at equal distance from previous prime (51943811) and next prime (51943861).

It is a junction number, because it is equal to n+sod(n) for n = 51943794 and 51943803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232821 + ... + 233043.

It is an arithmetic number, because the mean of its divisors is an integer number (1505280).

Almost surely, 2^51943836 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 51943836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72253440).

51943836 is an abundant number, since it is smaller than the sum of its proper divisors (92563044).

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

51943836 is a wasteful number, since it uses less digits than its factorization.

51943836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 341 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 51943836 is about 7207.2072261036. The cubic root of 51943836 is about 373.1166873003.

The spelling of 51943836 in words is "fifty-one million, nine hundred forty-three thousand, eight hundred thirty-six".