20053499 has 4 divisors (see below), whose sum is σ = 20076240. Its totient is φ = 20030760.

The previous prime is 20053483. The next prime is 20053513. The reversal of 20053499 is 99435002.

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 20053499 - 2⁴ = 20053483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20053399) 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, 9992 + ... + 11829.

It is an arithmetic number, because the mean of its divisors is an integer number (5019060).

Almost surely, 2^20053499 is an apocalyptic number.

20053499 is a deficient number, since it is larger than the sum of its proper divisors (22741).

20053499 is an equidigital number, since it uses as much as digits as its factorization.

20053499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22740.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 20053499 is about 4478.1133304105. The cubic root of 20053499 is about 271.6835772194.

The spelling of 20053499 in words is "twenty million, fifty-three thousand, four hundred ninety-nine".