51393200 has 30 divisors (see below), whose sum is σ = 123473124. Its totient is φ = 20557120.

The previous prime is 51393197. The next prime is 51393239. The reversal of 51393200 is 239315.

It is a happy number.

It is a super-2 number, since 2×51393200² = 5282522012480000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63842 + ... + 64641.

Almost surely, 2^51393200 is an apocalyptic number.

51393200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51393200 is an abundant number, since it is smaller than the sum of its proper divisors (72079924).

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

51393200 is a wasteful number, since it uses less digits than its factorization.

51393200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128501 (or 128490 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 51393200 is about 7168.9050767882. The cubic root of 51393200 is about 371.7935803201.

The spelling of 51393200 in words is "fifty-one million, three hundred ninety-three thousand, two hundred".