51355117 has 8 divisors (see below), whose sum is σ = 56466432. Its totient is φ = 46317600.

The previous prime is 51355097. The next prime is 51355151. The reversal of 51355117 is 71155315.

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-51355117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51355517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16984 + ... + 19777.

It is an arithmetic number, because the mean of its divisors is an integer number (7058304).

Almost surely, 2^51355117 is an apocalyptic number.

It is an amenable number.

51355117 is a deficient number, since it is larger than the sum of its proper divisors (5111315).

51355117 is a wasteful number, since it uses less digits than its factorization.

51355117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36899.

The product of its digits is 2625, while the sum is 28.

The square root of 51355117 is about 7166.2484606662. The cubic root of 51355117 is about 371.7017230725.

The spelling of 51355117 in words is "fifty-one million, three hundred fifty-five thousand, one hundred seventeen".