51227946 has 96 divisors (see below), whose sum is σ = 144488448. Its totient is φ = 12719520.

The previous prime is 51227941. The next prime is 51227947. The reversal of 51227946 is 64972215.

51227946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51227946.

It is not an unprimeable number, because it can be changed into a prime (51227941) 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 47 ways as a sum of consecutive naturals, for example, 31075 + ... + 32681.

It is an arithmetic number, because the mean of its divisors is an integer number (1505088).

Almost surely, 2^51227946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51227946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72244224).

51227946 is an abundant number, since it is smaller than the sum of its proper divisors (93260502).

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

51227946 is a wasteful number, since it uses less digits than its factorization.

51227946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656 (or 1653 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 51227946 is about 7157.3700477200. The cubic root of 51227946 is about 371.3946536935.

The spelling of 51227946 in words is "fifty-one million, two hundred twenty-seven thousand, nine hundred forty-six".