9713551 has 4 divisors (see below), whose sum is σ = 9720000. Its totient is φ = 9707104.

The previous prime is 9713531. The next prime is 9713563. The reversal of 9713551 is 1553179.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1553179 = 83 ⋅18713.

It is a cyclic number.

It is not a de Polignac number, because 9713551 - 2¹¹ = 9711503 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 (9713531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375 + ... + 4423.

It is an arithmetic number, because the mean of its divisors is an integer number (2430000).

Almost surely, 2^9713551 is an apocalyptic number.

9713551 is a deficient number, since it is larger than the sum of its proper divisors (6449).

9713551 is a wasteful number, since it uses less digits than its factorization.

9713551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6448.

The product of its digits is 4725, while the sum is 31.

The square root of 9713551 is about 3116.6570231580. The cubic root of 9713551 is about 213.3663894632.

The spelling of 9713551 in words is "nine million, seven hundred thirteen thousand, five hundred fifty-one".