51335717 has 4 divisors (see below), whose sum is σ = 52039020. Its totient is φ = 50632416.

The previous prime is 51335707. The next prime is 51335719. The reversal of 51335717 is 71753315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32273761 + 19061956 = 5681^2 + 4366^2 .

It is a cyclic number.

It is not a de Polignac number, because 51335717 - 2¹⁰ = 51334693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51335719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351542 + ... + 351687.

It is an arithmetic number, because the mean of its divisors is an integer number (13009755).

Almost surely, 2^51335717 is an apocalyptic number.

It is an amenable number.

51335717 is a deficient number, since it is larger than the sum of its proper divisors (703303).

51335717 is an equidigital number, since it uses as much as digits as its factorization.

51335717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703302.

The product of its digits is 11025, while the sum is 32.

The square root of 51335717 is about 7164.8947654519. The cubic root of 51335717 is about 371.6549122770.

The spelling of 51335717 in words is "fifty-one million, three hundred thirty-five thousand, seven hundred seventeen".