51943320 has 192 divisors, whose sum is σ = 198525600. Its totient is φ = 11612160.

The previous prime is 51943267. The next prime is 51943349. The reversal of 51943320 is 2334915.

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, 50976 + ... + 51984.

Almost surely, 2^51943320 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 51943320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99262800).

51943320 is an abundant number, since it is smaller than the sum of its proper divisors (146582280).

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

51943320 is a wasteful number, since it uses less digits than its factorization.

51943320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 51943320 is about 7207.1714285148. The cubic root of 51943320 is about 373.1154518065.

The spelling of 51943320 in words is "fifty-one million, nine hundred forty-three thousand, three hundred twenty".