51667900 has 18 divisors (see below), whose sum is σ = 112119560. Its totient is φ = 20667120.

The previous prime is 51667883. The next prime is 51667901. The reversal of 51667900 is 976615.

51667900 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 not an unprimeable number, because it can be changed into a prime (51667901) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 258240 + ... + 258439.

Almost surely, 2^51667900 is an apocalyptic number.

51667900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51667900 is an abundant number, since it is smaller than the sum of its proper divisors (60451660).

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

51667900 is a wasteful number, since it uses less digits than its factorization.

51667900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516693 (or 516686 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 51667900 is about 7188.0386754663. The cubic root of 51667900 is about 372.4548238834.

The spelling of 51667900 in words is "fifty-one million, six hundred sixty-seven thousand, nine hundred".