51318201 has 32 divisors (see below), whose sum is σ = 76671360. Its totient is φ = 30272000.

The previous prime is 51318199. The next prime is 51318209. The reversal of 51318201 is 10281315.

It is not a de Polignac number, because 51318201 - 2¹ = 51318199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51318209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296551 + ... + 296723.

It is an arithmetic number, because the mean of its divisors is an integer number (2395980).

Almost surely, 2^51318201 is an apocalyptic number.

It is an amenable number.

51318201 is a deficient number, since it is larger than the sum of its proper divisors (25353159).

51318201 is a wasteful number, since it uses less digits than its factorization.

51318201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 51318201 is about 7163.6723124386. The cubic root of 51318201 is about 371.6126373051.

Adding to 51318201 its reverse (10281315), we get a palindrome (61599516).

The spelling of 51318201 in words is "fifty-one million, three hundred eighteen thousand, two hundred one".