51253636 has 48 divisors (see below), whose sum is σ = 105106176. Its totient is φ = 21417984.

The previous prime is 51253627. The next prime is 51253667. The reversal of 51253636 is 63635215.

It is a junction number, because it is equal to n+sod(n) for n = 51253598 and 51253607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306825 + ... + 306991.

It is an arithmetic number, because the mean of its divisors is an integer number (2189712).

Almost surely, 2^51253636 is an apocalyptic number.

It is an amenable number.

51253636 is an abundant number, since it is smaller than the sum of its proper divisors (53852540).

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

51253636 is a wasteful number, since it uses less digits than its factorization.

51253636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 51253636 is about 7159.1644763897. The cubic root of 51253636 is about 371.4567261554.

The spelling of 51253636 in words is "fifty-one million, two hundred fifty-three thousand, six hundred thirty-six".