51235500 has 48 divisors (see below), whose sum is σ = 149202144. Its totient is φ = 13662400.

The previous prime is 51235493. The next prime is 51235511. The reversal of 51235500 is 553215.

51235500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 15579 + ... + 18578.

It is an arithmetic number, because the mean of its divisors is an integer number (3108378).

Almost surely, 2^51235500 is an apocalyptic number.

51235500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51235500 is an abundant number, since it is smaller than the sum of its proper divisors (97966644).

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

51235500 is a wasteful number, since it uses less digits than its factorization.

51235500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34179 (or 34167 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 51235500 is about 7157.8977360675. The cubic root of 51235500 is about 371.4129079053.

Adding to 51235500 its reverse (553215), we get a palindrome (51788715).

The spelling of 51235500 in words is "fifty-one million, two hundred thirty-five thousand, five hundred".