51538300 has 36 divisors (see below), whose sum is σ = 122007816. Its totient is φ = 18740800.

The previous prime is 51538297. The next prime is 51538309. The reversal of 51538300 is 383515.

It is a happy number.

51538300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51538309) 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 11 ways as a sum of consecutive naturals, for example, 22327 + ... + 24526.

It is an arithmetic number, because the mean of its divisors is an integer number (3389106).

Almost surely, 2^51538300 is an apocalyptic number.

51538300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51538300 is an abundant number, since it is smaller than the sum of its proper divisors (70469516).

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

51538300 is a wasteful number, since it uses less digits than its factorization.

51538300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46878 (or 46871 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51538300 is about 7179.0180387014. The cubic root of 51538300 is about 372.1431502871.

The spelling of 51538300 in words is "fifty-one million, five hundred thirty-eight thousand, three hundred".