51758226 has 48 divisors (see below), whose sum is σ = 121297176. Its totient is φ = 15856128.

The previous prime is 51758207. The next prime is 51758293. The reversal of 51758226 is 62285715.

It is a happy number.

51758226 is a `hidden beast` number, since 51 + 7 + 582 + 26 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 39501225 + 12257001 = 6285^2 + 3501^2 .

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 23 ways as a sum of consecutive naturals, for example, 86986 + ... + 87578.

Almost surely, 2^51758226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51758226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60648588).

51758226 is an abundant number, since it is smaller than the sum of its proper divisors (69538950).

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

51758226 is a wasteful number, since it uses less digits than its factorization.

51758226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 984 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 51758226 is about 7194.3190087735. The cubic root of 51758226 is about 372.6717397949.

It can be divided in two parts, 51758 and 226, that added together give a square (51984 = 228²).

The spelling of 51758226 in words is "fifty-one million, seven hundred fifty-eight thousand, two hundred twenty-six".