51318699 has 8 divisors (see below), whose sum is σ = 72450000. Its totient is φ = 32199936.

The previous prime is 51318653. The next prime is 51318703. The reversal of 51318699 is 99681315.

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

It is not a de Polignac number, because 51318699 - 2²⁵ = 17764267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51318699.

It is not an unprimeable number, because it can be changed into a prime (51318199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503074 + ... + 503175.

It is an arithmetic number, because the mean of its divisors is an integer number (9056250).

Almost surely, 2^51318699 is an apocalyptic number.

51318699 is a deficient number, since it is larger than the sum of its proper divisors (21131301).

51318699 is a wasteful number, since it uses less digits than its factorization.

51318699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006269.

The product of its digits is 58320, while the sum is 42.

The square root of 51318699 is about 7163.7070710631. The cubic root of 51318699 is about 371.6138393640.

The spelling of 51318699 in words is "fifty-one million, three hundred eighteen thousand, six hundred ninety-nine".