20475133 has 16 divisors (see below), whose sum is σ = 23990400. Its totient is φ = 17113536.

The previous prime is 20475121. The next prime is 20475149. The reversal of 20475133 is 33157402.

It is a cyclic number.

It is not a de Polignac number, because 20475133 - 2⁵ = 20475101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20475098 and 20475107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69735 + ... + 70027.

It is an arithmetic number, because the mean of its divisors is an integer number (1499400).

Almost surely, 2^20475133 is an apocalyptic number.

It is an amenable number.

20475133 is a deficient number, since it is larger than the sum of its proper divisors (3515267).

20475133 is a wasteful number, since it uses less digits than its factorization.

20475133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20475133 is about 4524.9456350325. The cubic root of 20475133 is about 273.5744766967.

The spelling of 20475133 in words is "twenty million, four hundred seventy-five thousand, one hundred thirty-three".