51786226 has 4 divisors (see below), whose sum is σ = 77679342. Its totient is φ = 25893112.

The previous prime is 51786223. The next prime is 51786253. The reversal of 51786226 is 62268715.

It is a happy number.

51786226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62268715 = 5 ⋅12453743.

It can be written as a sum of positive squares in only one way, i.e., 49014001 + 2772225 = 7001^2 + 1665^2 .

It is not an unprimeable number, because it can be changed into a prime (51786223) 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 as a sum of consecutive naturals, namely, 12946555 + ... + 12946558.

Almost surely, 2^51786226 is an apocalyptic number.

51786226 is a deficient number, since it is larger than the sum of its proper divisors (25893116).

51786226 is a wasteful number, since it uses less digits than its factorization.

51786226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25893115.

The product of its digits is 40320, while the sum is 37.

The square root of 51786226 is about 7196.2647255364. The cubic root of 51786226 is about 372.7389299366.

The spelling of 51786226 in words is "fifty-one million, seven hundred eighty-six thousand, two hundred twenty-six".