551387713 has 4 divisors (see below), whose sum is σ = 552080340. Its totient is φ = 550695088.

The previous prime is 551387699. The next prime is 551387719. The reversal of 551387713 is 317783155.

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 283181584 + 268206129 = 16828^2 + 16377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551387713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551387719) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 345118 + ... + 346711.

It is an arithmetic number, because the mean of its divisors is an integer number (138020085).

Almost surely, 2^551387713 is an apocalyptic number.

It is an amenable number.

551387713 is a deficient number, since it is larger than the sum of its proper divisors (692627).

551387713 is an equidigital number, since it uses as much as digits as its factorization.

551387713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692626.

The product of its digits is 88200, while the sum is 40.

The square root of 551387713 is about 23481.6463008878. The cubic root of 551387713 is about 820.0097723404.

The spelling of 551387713 in words is "five hundred fifty-one million, three hundred eighty-seven thousand, seven hundred thirteen".