51040064 has 28 divisors (see below), whose sum is σ = 102802944. Its totient is φ = 25137024.

The previous prime is 51040051. The next prime is 51040081. The reversal of 51040064 is 46004015.

It is a happy number.

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, 1664 + ... + 10239.

Almost surely, 2^51040064 is an apocalyptic number.

It is an amenable number.

51040064 is an abundant number, since it is smaller than the sum of its proper divisors (51762880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51040064 is a wasteful number, since it uses less digits than its factorization.

51040064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11982 (or 11972 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 51040064 is about 7144.2329189354. The cubic root of 51040064 is about 370.9400590456.

Adding to 51040064 its reverse (46004015), we get a palindrome (97044079).

The spelling of 51040064 in words is "fifty-one million, forty thousand, sixty-four".