51066222 has 8 divisors (see below), whose sum is σ = 102132456. Its totient is φ = 17022072.

The previous prime is 51066221. The next prime is 51066227. The reversal of 51066222 is 22266015.

It is a sphenic number, since it is the product of 3 distinct primes.

51066222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 51066192 and 51066201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51066221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255513 + ... + 4255524.

It is an arithmetic number, because the mean of its divisors is an integer number (12766557).

Almost surely, 2^51066222 is an apocalyptic number.

51066222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51066222 is a wasteful number, since it uses less digits than its factorization.

51066222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8511042.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 51066222 is about 7146.0633918263. The cubic root of 51066222 is about 371.0034170705.

The spelling of 51066222 in words is "fifty-one million, sixty-six thousand, two hundred twenty-two".