51636244 has 12 divisors (see below), whose sum is σ = 98578368. Its totient is φ = 23471000.

The previous prime is 51636239. The next prime is 51636251. The reversal of 51636244 is 44263615.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 586732 + ... + 586819.

It is an arithmetic number, because the mean of its divisors is an integer number (8214864).

Almost surely, 2^51636244 is an apocalyptic number.

It is an amenable number.

51636244 is a deficient number, since it is larger than the sum of its proper divisors (46942124).

51636244 is a wasteful number, since it uses less digits than its factorization.

51636244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173566 (or 1173564 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 51636244 is about 7185.8363465918. The cubic root of 51636244 is about 372.3787428695.

Adding to 51636244 its reverse (44263615), we get a palindrome (95899859).

The spelling of 51636244 in words is "fifty-one million, six hundred thirty-six thousand, two hundred forty-four".