51493200 has 240 divisors, whose sum is σ = 185988096. Its totient is φ = 12070400.

The previous prime is 51493193. The next prime is 51493217. The reversal of 51493200 is 239415.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 620359 + ... + 620441.

Almost surely, 2^51493200 is an apocalyptic number.

51493200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51493200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92994048).

51493200 is an abundant number, since it is smaller than the sum of its proper divisors (134494896).

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

51493200 is a wasteful number, since it uses less digits than its factorization.

51493200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51493200 is about 7175.8762531136. The cubic root of 51493200 is about 372.0345672584.

The spelling of 51493200 in words is "fifty-one million, four hundred ninety-three thousand, two hundred".