51270900 has 144 divisors (see below), whose sum is σ = 158323200. Its totient is φ = 12787200.

The previous prime is 51270881. The next prime is 51270913. The reversal of 51270900 is 907215.

51270900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 344026 + ... + 344174.

Almost surely, 2^51270900 is an apocalyptic number.

51270900 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 51270900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79161600).

51270900 is an abundant number, since it is smaller than the sum of its proper divisors (107052300).

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

51270900 is a wasteful number, since it uses less digits than its factorization.

51270900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 51270900 is about 7160.3701021665. The cubic root of 51270900 is about 371.4984279711.

The spelling of 51270900 in words is "fifty-one million, two hundred seventy thousand, nine hundred".