551747671 has 4 divisors (see below), whose sum is σ = 552293352. Its totient is φ = 551201992.

The previous prime is 551747659. The next prime is 551747687. The reversal of 551747671 is 176747155.

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

It is a cyclic number.

It is not a de Polignac number, because 551747671 - 2¹⁵ = 551714903 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 (551747171) 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, 271321 + ... + 273346.

It is an arithmetic number, because the mean of its divisors is an integer number (138073338).

Almost surely, 2^551747671 is an apocalyptic number.

551747671 is a deficient number, since it is larger than the sum of its proper divisors (545681).

551747671 is a wasteful number, since it uses less digits than its factorization.

551747671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545680.

The product of its digits is 205800, while the sum is 43.

The square root of 551747671 is about 23489.3097174012. The cubic root of 551747671 is about 820.1881736498.

The spelling of 551747671 in words is "five hundred fifty-one million, seven hundred forty-seven thousand, six hundred seventy-one".