51226636 has 12 divisors (see below), whose sum is σ = 90043128. Its totient is φ = 25500032.

The previous prime is 51226619. The next prime is 51226657. The reversal of 51226636 is 63662215.

It is a junction number, because it is equal to n+sod(n) for n = 51226598 and 51226607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27301 + ... + 29116.

It is an arithmetic number, because the mean of its divisors is an integer number (7503594).

Almost surely, 2^51226636 is an apocalyptic number.

It is an amenable number.

51226636 is a deficient number, since it is larger than the sum of its proper divisors (38816492).

51226636 is a wasteful number, since it uses less digits than its factorization.

51226636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56648 (or 56646 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 51226636 is about 7157.2785330739. The cubic root of 51226636 is about 371.3914879010.

The spelling of 51226636 in words is "fifty-one million, two hundred twenty-six thousand, six hundred thirty-six".