51806100 has 36 divisors (see below), whose sum is σ = 149893184. Its totient is φ = 13814880.

The previous prime is 51806077. The next prime is 51806101. The reversal of 51806100 is 160815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51806101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86044 + ... + 86643.

Almost surely, 2^51806100 is an apocalyptic number.

51806100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51806100 is an abundant number, since it is smaller than the sum of its proper divisors (98087084).

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

51806100 is a wasteful number, since it uses less digits than its factorization.

51806100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172704 (or 172697 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 51806100 is about 7197.6454483393. The cubic root of 51806100 is about 372.7866058448.

Adding to 51806100 its reverse (160815), we get a palindrome (51966915).

The spelling of 51806100 in words is "fifty-one million, eight hundred six thousand, one hundred".