51318470 has 32 divisors (see below), whose sum is σ = 108150336. Its totient is φ = 17164800.

The previous prime is 51318439. The next prime is 51318503. The reversal of 51318470 is 7481315.

51318470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 6071 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (3379698).

Almost surely, 2^51318470 is an apocalyptic number.

51318470 is an abundant number, since it is smaller than the sum of its proper divisors (56831866).

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

51318470 is a wasteful number, since it uses less digits than its factorization.

51318470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17936.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 51318470 is about 7163.6910877005. The cubic root of 51318470 is about 371.6132866109.

Adding to 51318470 its reverse (7481315), we get a palindrome (58799785).

The spelling of 51318470 in words is "fifty-one million, three hundred eighteen thousand, four hundred seventy".