51230500 has 24 divisors (see below), whose sum is σ = 111888504. Its totient is φ = 20492000.

The previous prime is 51230497. The next prime is 51230519. The reversal of 51230500 is 503215.

51230500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12616704 + 38613796 = 3552^2 + 6214^2 .

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 7 ways as a sum of consecutive naturals, for example, 50731 + ... + 51730.

It is an arithmetic number, because the mean of its divisors is an integer number (4662021).

Almost surely, 2^51230500 is an apocalyptic number.

51230500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51230500 is an abundant number, since it is smaller than the sum of its proper divisors (60658004).

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

51230500 is a wasteful number, since it uses less digits than its factorization.

51230500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102480 (or 102468 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 51230500 is about 7157.5484629865. The cubic root of 51230500 is about 371.4008256254.

Adding to 51230500 its reverse (503215), we get a palindrome (51733715).

The spelling of 51230500 in words is "fifty-one million, two hundred thirty thousand, five hundred".