51868350 has 84 divisors (see below), whose sum is σ = 144748176. Its totient is φ = 13821840.

The previous prime is 51868331. The next prime is 51868351. The reversal of 51868350 is 5386815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51868351) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 35739 + ... + 37161.

Almost surely, 2^51868350 is an apocalyptic number.

51868350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51868350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72374088).

51868350 is an abundant number, since it is smaller than the sum of its proper divisors (92879826).

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

51868350 is a wasteful number, since it uses less digits than its factorization.

51868350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 51868350 is about 7201.9684809085. The cubic root of 51868350 is about 372.9358590388.

The spelling of 51868350 in words is "fifty-one million, eight hundred sixty-eight thousand, three hundred fifty".