51202636 has 6 divisors (see below), whose sum is σ = 89604620. Its totient is φ = 25601316.

The previous prime is 51202631. The next prime is 51202649. The reversal of 51202636 is 63620215.

It is a self number, because there is not a number n which added to its sum of digits gives 51202636.

It is not an unprimeable number, because it can be changed into a prime (51202631) by changing a digit.

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 as a sum of consecutive naturals, namely, 6400326 + ... + 6400333.

Almost surely, 2^51202636 is an apocalyptic number.

It is an amenable number.

51202636 is a deficient number, since it is larger than the sum of its proper divisors (38401984).

51202636 is a wasteful number, since it uses less digits than its factorization.

51202636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12800663 (or 12800661 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 51202636 is about 7155.6017217282. The cubic root of 51202636 is about 371.3334790943. Note that the first 3 decimals are identical.

The spelling of 51202636 in words is "fifty-one million, two hundred two thousand, six hundred thirty-six".