51550064 has 20 divisors (see below), whose sum is σ = 100153560. Its totient is φ = 25704000.

The previous prime is 51550049. The next prime is 51550073. The reversal of 51550064 is 46005515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1814 + ... + 10314.

It is an arithmetic number, because the mean of its divisors is an integer number (5007678).

Almost surely, 2^51550064 is an apocalyptic number.

It is an amenable number.

51550064 is a deficient number, since it is larger than the sum of its proper divisors (48603496).

51550064 is a wasteful number, since it uses less digits than its factorization.

51550064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8888 (or 8882 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 51550064 is about 7179.8373240624. The cubic root of 51550064 is about 372.1714629463.

Adding to 51550064 its reverse (46005515), we get a palindrome (97555579).

The spelling of 51550064 in words is "fifty-one million, five hundred fifty thousand, sixty-four".