51318395 has 4 divisors (see below), whose sum is σ = 61582080. Its totient is φ = 41054712.

The previous prime is 51318367. The next prime is 51318409. The reversal of 51318395 is 59381315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51318395 - 2¹² = 51314299 is a prime.

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, 5131835 + ... + 5131844.

It is an arithmetic number, because the mean of its divisors is an integer number (15395520).

Almost surely, 2^51318395 is an apocalyptic number.

51318395 is a deficient number, since it is larger than the sum of its proper divisors (10263685).

51318395 is a wasteful number, since it uses less digits than its factorization.

51318395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10263684.

The product of its digits is 16200, while the sum is 35.

The square root of 51318395 is about 7163.6858529670. The cubic root of 51318395 is about 371.6131055779.

The spelling of 51318395 in words is "fifty-one million, three hundred eighteen thousand, three hundred ninety-five".