51807064 has 8 divisors (see below), whose sum is σ = 97138260. Its totient is φ = 25903528.

The previous prime is 51807059. The next prime is 51807073. The reversal of 51807064 is 46070815.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 3237934 + ... + 3237949.

Almost surely, 2^51807064 is an apocalyptic number.

It is an amenable number.

51807064 is a deficient number, since it is larger than the sum of its proper divisors (45331196).

51807064 is a wasteful number, since it uses less digits than its factorization.

51807064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475889 (or 6475885 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 51807064 is about 7197.7124143717. The cubic root of 51807064 is about 372.7889180825.

Adding to 51807064 its reverse (46070815), we get a palindrome (97877879).

The spelling of 51807064 in words is "fifty-one million, eight hundred seven thousand, sixty-four".