20319055 has 8 divisors (see below), whose sum is σ = 24428592. Its totient is φ = 16224768.

The previous prime is 20319011. The next prime is 20319083. The reversal of 20319055 is 55091302.

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 20319055 - 2¹⁷ = 20187983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637 + ... + 6406.

It is an arithmetic number, because the mean of its divisors is an integer number (3053574).

Almost surely, 2^20319055 is an apocalyptic number.

20319055 is a deficient number, since it is larger than the sum of its proper divisors (4109537).

20319055 is an equidigital number, since it uses as much as digits as its factorization.

20319055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 20319055 is about 4507.6662476275. Note that the first 3 decimals coincide. The cubic root of 20319055 is about 272.8775676819.

The spelling of 20319055 in words is "twenty million, three hundred nineteen thousand, fifty-five".