985796551 has 4 divisors (see below), whose sum is σ = 1037680600. Its totient is φ = 933912504.

The previous prime is 985796533. The next prime is 985796557. The reversal of 985796551 is 155697589.

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 985796551 - 2²¹ = 983699399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 985796492 and 985796501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985796557) 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, 25941996 + ... + 25942033.

It is an arithmetic number, because the mean of its divisors is an integer number (259420150).

Almost surely, 2^985796551 is an apocalyptic number.

985796551 is a deficient number, since it is larger than the sum of its proper divisors (51884049).

985796551 is a wasteful number, since it uses less digits than its factorization.

985796551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51884048.

The product of its digits is 3402000, while the sum is 55.

The square root of 985796551 is about 31397.3972010420. The cubic root of 985796551 is about 995.2429231033.

The spelling of 985796551 in words is "nine hundred eighty-five million, seven hundred ninety-six thousand, five hundred fifty-one".