51684500 has 48 divisors (see below), whose sum is σ = 129013248. Its totient is φ = 17719200.

The previous prime is 51684461. The next prime is 51684527. The reversal of 51684500 is 548615.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3884 + ... + 10883.

It is an arithmetic number, because the mean of its divisors is an integer number (2687776).

Almost surely, 2^51684500 is an apocalyptic number.

51684500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51684500 is an abundant number, since it is smaller than the sum of its proper divisors (77328748).

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

51684500 is a wasteful number, since it uses less digits than its factorization.

51684500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14793 (or 14781 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 51684500 is about 7189.1932788040. The cubic root of 51684500 is about 372.4947073704.

The spelling of 51684500 in words is "fifty-one million, six hundred eighty-four thousand, five hundred".