51300300 has 72 divisors (see below), whose sum is σ = 149212672. Its totient is φ = 13608000.

The previous prime is 51300299. The next prime is 51300311. The reversal of 51300300 is 300315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80985 + ... + 81615.

Almost surely, 2^51300300 is an apocalyptic number.

51300300 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 51300300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74606336).

51300300 is an abundant number, since it is smaller than the sum of its proper divisors (97912372).

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

51300300 is a wasteful number, since it uses less digits than its factorization.

51300300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 51300300 is about 7162.4227744528. The cubic root of 51300300 is about 371.5694231931.

Adding to 51300300 its reverse (300315), we get a palindrome (51600615).

The spelling of 51300300 in words is "fifty-one million, three hundred thousand, three hundred".