20553373 has 8 divisors (see below), whose sum is σ = 21520800. Its totient is φ = 19603248.

The previous prime is 20553361. The next prime is 20553433. The reversal of 20553373 is 37335502.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20553373 - 2¹³ = 20545181 is a prime.

It is a super-2 number, since 2×20553373² = 844882283354258, which contains 22 as substring.

It is a house number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863 + ... + 6676.

It is an arithmetic number, because the mean of its divisors is an integer number (2690100).

Almost surely, 2^20553373 is an apocalyptic number.

It is an amenable number.

20553373 is a deficient number, since it is larger than the sum of its proper divisors (967427).

20553373 is an equidigital number, since it uses as much as digits as its factorization.

20553373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8651.

The product of its (nonzero) digits is 9450, while the sum is 28.

The square root of 20553373 is about 4533.5827995086. The cubic root of 20553373 is about 273.9224965941.

Adding to 20553373 its reverse (37335502), we get a palindrome (57888875).

The spelling of 20553373 in words is "twenty million, five hundred fifty-three thousand, three hundred seventy-three".