97716551 has 4 divisors (see below), whose sum is σ = 97737912. Its totient is φ = 97695192.

The previous prime is 97716533. The next prime is 97716589. The reversal of 97716551 is 15561779.

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 97716551 - 2¹⁴ = 97700167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97716499 and 97716508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97716251) 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, 725 + ... + 13998.

It is an arithmetic number, because the mean of its divisors is an integer number (24434478).

Almost surely, 2^97716551 is an apocalyptic number.

97716551 is a deficient number, since it is larger than the sum of its proper divisors (21361).

97716551 is a wasteful number, since it uses less digits than its factorization.

97716551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21360.

The product of its digits is 66150, while the sum is 41.

The square root of 97716551 is about 9885.1682332675. The cubic root of 97716551 is about 460.5987021618.

The spelling of 97716551 in words is "ninety-seven million, seven hundred sixteen thousand, five hundred fifty-one".