51363865 has 8 divisors (see below), whose sum is σ = 70441920. Its totient is φ = 35220912.

The previous prime is 51363797. The next prime is 51363877. The reversal of 51363865 is 56836315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51363865 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 733735 + ... + 733804.

It is an arithmetic number, because the mean of its divisors is an integer number (8805240).

Almost surely, 2^51363865 is an apocalyptic number.

It is an amenable number.

51363865 is a deficient number, since it is larger than the sum of its proper divisors (19078055).

51363865 is a wasteful number, since it uses less digits than its factorization.

51363865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467551.

The product of its digits is 64800, while the sum is 37.

The square root of 51363865 is about 7166.8587958742. The cubic root of 51363865 is about 371.7228275067.

The spelling of 51363865 in words is "fifty-one million, three hundred sixty-three thousand, eight hundred sixty-five".