51002226 has 36 divisors (see below), whose sum is σ = 121469166. Its totient is φ = 15454560.

The previous prime is 51002221. The next prime is 51002239. The reversal of 51002226 is 62220015.

51002226 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 only one way, i.e., 44876601 + 6125625 = 6699^2 + 2475^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51002199 and 51002208.

It is not an unprimeable number, because it can be changed into a prime (51002221) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 9531 + ... + 13886.

Almost surely, 2^51002226 is an apocalyptic number.

51002226 is an abundant number, since it is smaller than the sum of its proper divisors (70466940).

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

51002226 is a wasteful number, since it uses less digits than its factorization.

51002226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23447 (or 23433 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51002226 is about 7141.5842780156. The cubic root of 51002226 is about 370.8483722499.

The spelling of 51002226 in words is "fifty-one million, two thousand, two hundred twenty-six".