51440226 has 16 divisors (see below), whose sum is σ = 103108224. Its totient is φ = 17108784.

The previous prime is 51440203. The next prime is 51440237. The reversal of 51440226 is 62204415.

It is a junction number, because it is equal to n+sod(n) for n = 51440196 and 51440205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6481 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (6444264).

Almost surely, 2^51440226 is an apocalyptic number.

51440226 is an abundant number, since it is smaller than the sum of its proper divisors (51667998).

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

51440226 is a wasteful number, since it uses less digits than its factorization.

51440226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18985.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 51440226 is about 7172.1841861458. The cubic root of 51440226 is about 371.9069457386.

It can be divided in two parts, 5144022 and 6, that added together give a triangular number (5144028 = T₃₂₀₇).

The spelling of 51440226 in words is "fifty-one million, four hundred forty thousand, two hundred twenty-six".