51453200 has 60 divisors (see below), whose sum is σ = 124314960. Its totient is φ = 20465280.

The previous prime is 51453187. The next prime is 51453217. The reversal of 51453200 is 235415.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122591 + ... + 123009.

It is an arithmetic number, because the mean of its divisors is an integer number (2071916).

Almost surely, 2^51453200 is an apocalyptic number.

51453200 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 51453200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62157480).

51453200 is an abundant number, since it is smaller than the sum of its proper divisors (72861760).

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

51453200 is a wasteful number, since it uses less digits than its factorization.

51453200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 51453200 is about 7173.0885955772. The cubic root of 51453200 is about 371.9382099552.

Adding to 51453200 its reverse (235415), we get a palindrome (51688615).

The spelling of 51453200 in words is "fifty-one million, four hundred fifty-three thousand, two hundred".