51683900 has 18 divisors (see below), whose sum is σ = 112154280. Its totient is φ = 20673520.

The previous prime is 51683899. The next prime is 51683911. The reversal of 51683900 is 938615.

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 5 ways as a sum of consecutive naturals, for example, 258320 + ... + 258519.

Almost surely, 2^51683900 is an apocalyptic number.

51683900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51683900 is an abundant number, since it is smaller than the sum of its proper divisors (60470380).

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

51683900 is a wasteful number, since it uses less digits than its factorization.

51683900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516853 (or 516846 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 51683900 is about 7189.1515493833. The cubic root of 51683900 is about 372.4932659474.

The spelling of 51683900 in words is "fifty-one million, six hundred eighty-three thousand, nine hundred".