51616436 has 12 divisors (see below), whose sum is σ = 90398112. Its totient is φ = 25788408.

The previous prime is 51616391. The next prime is 51616447. The reversal of 51616436 is 63461615.

51616436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1991 + ... + 10353.

It is an arithmetic number, because the mean of its divisors is an integer number (7533176).

Almost surely, 2^51616436 is an apocalyptic number.

It is an amenable number.

51616436 is a deficient number, since it is larger than the sum of its proper divisors (38781676).

51616436 is a wasteful number, since it uses less digits than its factorization.

51616436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9910 (or 9908 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 51616436 is about 7184.4579475420. The cubic root of 51616436 is about 372.3311211414.

The spelling of 51616436 in words is "fifty-one million, six hundred sixteen thousand, four hundred thirty-six".