51242300 has 36 divisors (see below), whose sum is σ = 112258440. Its totient is φ = 20301120.

The previous prime is 51242293. The next prime is 51242311. The reversal of 51242300 is 324215.

It is a congruent number.

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, 8306 + ... + 13094.

It is an arithmetic number, because the mean of its divisors is an integer number (3118290).

Almost surely, 2^51242300 is an apocalyptic number.

51242300 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 51242300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56129220).

51242300 is an abundant number, since it is smaller than the sum of its proper divisors (61016140).

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

51242300 is a wasteful number, since it uses less digits than its factorization.

51242300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4910 (or 4903 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51242300 is about 7158.3727201089. The cubic root of 51242300 is about 371.4293385445.

Adding to 51242300 its reverse (324215), we get a palindrome (51566515).

The spelling of 51242300 in words is "fifty-one million, two hundred forty-two thousand, three hundred".