51889900 has 36 divisors (see below), whose sum is σ = 113086512. Its totient is φ = 20666560.

The previous prime is 51889889. The next prime is 51889907. The reversal of 51889900 is 998815.

It is not an unprimeable number, because it can be changed into a prime (51889907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25314 + ... + 27286.

It is an arithmetic number, because the mean of its divisors is an integer number (3141292).

Almost surely, 2^51889900 is an apocalyptic number.

51889900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51889900 is an abundant number, since it is smaller than the sum of its proper divisors (61196612).

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

51889900 is a wasteful number, since it uses less digits than its factorization.

51889900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250 (or 2243 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 51889900 is about 7203.4644442796. The cubic root of 51889900 is about 372.9875003897.

The spelling of 51889900 in words is "fifty-one million, eight hundred eighty-nine thousand, nine hundred".