20983055 has 8 divisors (see below), whose sum is σ = 25606800. Its totient is φ = 16501696.

The previous prime is 20983051. The next prime is 20983073. The reversal of 20983055 is 55038902.

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 20983055 - 2² = 20983051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20983051) 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, 35270 + ... + 35859.

It is an arithmetic number, because the mean of its divisors is an integer number (3200850).

Almost surely, 2^20983055 is an apocalyptic number.

20983055 is a deficient number, since it is larger than the sum of its proper divisors (4623745).

20983055 is an equidigital number, since it uses as much as digits as its factorization.

20983055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71193.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 20983055 is about 4580.7264707686. The cubic root of 20983055 is about 275.8181913682.

The spelling of 20983055 in words is "twenty million, nine hundred eighty-three thousand, fifty-five".