51640612 has 24 divisors (see below), whose sum is σ = 94562496. Its totient is φ = 24629088.

The previous prime is 51640601. The next prime is 51640621. The reversal of 51640612 is 21604615.

51640612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 51298 + ... + 52294.

It is an arithmetic number, because the mean of its divisors is an integer number (3940104).

Almost surely, 2^51640612 is an apocalyptic number.

It is an amenable number.

51640612 is a deficient number, since it is larger than the sum of its proper divisors (42921884).

51640612 is a wasteful number, since it uses less digits than its factorization.

51640612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51640612 is about 7186.1402713835. The cubic root of 51640612 is about 372.3892426294.

The spelling of 51640612 in words is "fifty-one million, six hundred forty thousand, six hundred twelve".