984551 has 4 divisors (see below), whose sum is σ = 998112. Its totient is φ = 970992.

The previous prime is 984541. The next prime is 984563. The reversal of 984551 is 155489.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155489 = 61 ⋅2549.

It is a cyclic number.

It is not a de Polignac number, because 984551 - 2¹⁰ = 983527 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984541) 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, 6671 + ... + 6816.

It is an arithmetic number, because the mean of its divisors is an integer number (249528).

2⁹⁸⁴⁵⁵¹ is an apocalyptic number.

984551 is a deficient number, since it is larger than the sum of its proper divisors (13561).

984551 is a wasteful number, since it uses less digits than its factorization.

984551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13560.

The product of its digits is 7200, while the sum is 32.

The square root of 984551 is about 992.2454333480. The cubic root of 984551 is about 99.4823584288.

The spelling of 984551 in words is "nine hundred eighty-four thousand, five hundred fifty-one".