51210764 has 24 divisors (see below), whose sum is σ = 100043328. Its totient is φ = 22735440.

The previous prime is 51210743. The next prime is 51210779. The reversal of 51210764 is 46701215.

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 7 ways as a sum of consecutive naturals, for example, 11642 + ... + 15425.

It is an arithmetic number, because the mean of its divisors is an integer number (4168472).

Almost surely, 2^51210764 is an apocalyptic number.

It is an amenable number.

51210764 is a deficient number, since it is larger than the sum of its proper divisors (48832564).

51210764 is a wasteful number, since it uses less digits than its factorization.

51210764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27125 (or 27123 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51210764 is about 7156.1696458371. The cubic root of 51210764 is about 371.3531267731.

Adding to 51210764 its reverse (46701215), we get a palindrome (97911979).

The spelling of 51210764 in words is "fifty-one million, two hundred ten thousand, seven hundred sixty-four".