51806230 has 24 divisors (see below), whose sum is σ = 108476928. Its totient is φ = 17761968.

The previous prime is 51806207. The next prime is 51806243. The reversal of 51806230 is 3260815.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51806195 and 51806204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52374 + ... + 53353.

It is an arithmetic number, because the mean of its divisors is an integer number (4519872).

Almost surely, 2^51806230 is an apocalyptic number.

51806230 is an abundant number, since it is smaller than the sum of its proper divisors (56670698).

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

51806230 is a wasteful number, since it uses less digits than its factorization.

51806230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105748 (or 105741 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51806230 is about 7197.6544790647. The cubic root of 51806230 is about 372.7869176628.

The spelling of 51806230 in words is "fifty-one million, eight hundred six thousand, two hundred thirty".