20582141 has 4 divisors (see below), whose sum is σ = 21291900. Its totient is φ = 19872384.

The previous prime is 20582129. The next prime is 20582153. The reversal of 20582141 is 14128502.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20582129) and next prime (20582153).

It can be written as a sum of positive squares in 2 ways, for example, as 14100025 + 6482116 = 3755^2 + 2546^2 .

It is a cyclic number.

It is not a de Polignac number, because 20582141 - 2¹⁴ = 20565757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20582641) 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, 354836 + ... + 354893.

It is an arithmetic number, because the mean of its divisors is an integer number (5322975).

Almost surely, 2^20582141 is an apocalyptic number.

It is an amenable number.

20582141 is a deficient number, since it is larger than the sum of its proper divisors (709759).

20582141 is an equidigital number, since it uses as much as digits as its factorization.

20582141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709758.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 20582141 is about 4536.7544566573. The cubic root of 20582141 is about 274.0502376494.

The spelling of 20582141 in words is "twenty million, five hundred eighty-two thousand, one hundred forty-one".