51943900 has 36 divisors (see below), whose sum is σ = 113195880. Its totient is φ = 20689600.

The previous prime is 51943861. The next prime is 51943939. The reversal of 51943900 is 934915.

51943900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51943861) and next prime (51943939).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 25935 + ... + 27865.

It is an arithmetic number, because the mean of its divisors is an integer number (3144330).

Almost surely, 2^51943900 is an apocalyptic number.

51943900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51943900 is an abundant number, since it is smaller than the sum of its proper divisors (61251980).

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

51943900 is a wasteful number, since it uses less digits than its factorization.

51943900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 51943900 is about 7207.2116661022. The cubic root of 51943900 is about 373.1168405392.

The spelling of 51943900 in words is "fifty-one million, nine hundred forty-three thousand, nine hundred".