2098557 has 6 divisors (see below), whose sum is σ = 3031262. Its totient is φ = 1399032.

The previous prime is 2098553. The next prime is 2098559. The reversal of 2098557 is 7558902.

It can be written as a sum of positive squares in only one way, i.e., 1887876 + 210681 = 1374^2 + 459^2 .

It is not a de Polignac number, because 2098557 - 2² = 2098553 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 (2098553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116578 + ... + 116595.

2^2098557 is an apocalyptic number.

It is an amenable number.

2098557 is a deficient number, since it is larger than the sum of its proper divisors (932705).

2098557 is a wasteful number, since it uses less digits than its factorization.

2098557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233179 (or 233176 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 2098557 is about 1448.6397067594. The cubic root of 2098557 is about 128.0285784170.

The spelling of 2098557 in words is "two million, ninety-eight thousand, five hundred fifty-seven".