20058499 has 4 divisors (see below), whose sum is σ = 20257200. Its totient is φ = 19859800.

The previous prime is 20058497. The next prime is 20058559. The reversal of 20058499 is 99485002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99485002 = 2 ⋅49742501.

It is a cyclic number.

It is not a de Polignac number, because 20058499 - 2¹ = 20058497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20058491) 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, 99199 + ... + 99400.

It is an arithmetic number, because the mean of its divisors is an integer number (5064300).

Almost surely, 2^20058499 is an apocalyptic number.

20058499 is a deficient number, since it is larger than the sum of its proper divisors (198701).

20058499 is a wasteful number, since it uses less digits than its factorization.

20058499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198700.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 20058499 is about 4478.6715664357. The cubic root of 20058499 is about 271.7061552411.

The spelling of 20058499 in words is "twenty million, fifty-eight thousand, four hundred ninety-nine".