20553334 has 8 divisors (see below), whose sum is σ = 30875040. Its totient is φ = 10261656.

The previous prime is 20553331. The next prime is 20553353. The reversal of 20553334 is 43335502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20553299 and 20553308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553331) 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, 5709 + ... + 8584.

It is an arithmetic number, because the mean of its divisors is an integer number (3859380).

Almost surely, 2^20553334 is an apocalyptic number.

20553334 is a deficient number, since it is larger than the sum of its proper divisors (10321706).

20553334 is a wasteful number, since it uses less digits than its factorization.

20553334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15014.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 20553334 is about 4533.5784982726. The cubic root of 20553334 is about 273.9223233381.

Adding to 20553334 its reverse (43335502), we get a palindrome (63888836).

The spelling of 20553334 in words is "twenty million, five hundred fifty-three thousand, three hundred thirty-four".