5098921 has 4 divisors (see below), whose sum is σ = 5103700. Its totient is φ = 5094144.

The previous prime is 5098909. The next prime is 5098927. The reversal of 5098921 is 1298905.

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: 1298905 = 5 ⋅259781.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 416025 = 2164^2 + 645^2 .

It is a cyclic number.

It is not a de Polignac number, because 5098921 - 2¹¹ = 5096873 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5098927) 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, 25 + ... + 3193.

It is an arithmetic number, because the mean of its divisors is an integer number (1275925).

Almost surely, 2^5098921 is an apocalyptic number.

It is an amenable number.

5098921 is a deficient number, since it is larger than the sum of its proper divisors (4779).

5098921 is a wasteful number, since it uses less digits than its factorization.

5098921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4778.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 5098921 is about 2258.0790508749. The cubic root of 5098921 is about 172.1179221095.

The spelling of 5098921 in words is "five million, ninety-eight thousand, nine hundred twenty-one".