51930900 has 108 divisors (see below), whose sum is σ = 186050592. Its totient is φ = 11868480.

The previous prime is 51930881. The next prime is 51930929. The reversal of 51930900 is 903915.

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 35 ways as a sum of consecutive naturals, for example, 2179 + ... + 10421.

Almost surely, 2^51930900 is an apocalyptic number.

51930900 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 51930900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93025296).

51930900 is an abundant number, since it is smaller than the sum of its proper divisors (134119692).

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

51930900 is a wasteful number, since it uses less digits than its factorization.

51930900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8270 (or 8260 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 51930900 is about 7206.3097352251. The cubic root of 51930900 is about 373.0857112912.

The spelling of 51930900 in words is "fifty-one million, nine hundred thirty thousand, nine hundred".