51355868 has 24 divisors (see below), whose sum is σ = 93350880. Its totient is φ = 24691520.

The previous prime is 51355867. The next prime is 51355877. The reversal of 51355868 is 86855315.

51355868 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 (51355867) 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 7 ways as a sum of consecutive naturals, for example, 33233 + ... + 34743.

It is an arithmetic number, because the mean of its divisors is an integer number (3889620).

Almost surely, 2^51355868 is an apocalyptic number.

51355868 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

51355868 is a deficient number, since it is larger than the sum of its proper divisors (41995012).

51355868 is a wasteful number, since it uses less digits than its factorization.

51355868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837 (or 1835 counting only the distinct ones).

The product of its digits is 144000, while the sum is 41.

The square root of 51355868 is about 7166.3008588811. The cubic root of 51355868 is about 371.7035349441.

The spelling of 51355868 in words is "fifty-one million, three hundred fifty-five thousand, eight hundred sixty-eight".