20061583 has 2 divisors, whose sum is σ = 20061584. Its totient is φ = 20061582.

The previous prime is 20061553. The next prime is 20061611. The reversal of 20061583 is 38516002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20061583 is a prime.

It is a super-2 number, since 2×20061583² = 804934224931778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20061523) by changing a digit.

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 as a sum of consecutive naturals, namely, 10030791 + 10030792.

It is an arithmetic number, because the mean of its divisors is an integer number (10030792).

Almost surely, 2^20061583 is an apocalyptic number.

20061583 is a deficient number, since it is larger than the sum of its proper divisors (1).

20061583 is an equidigital number, since it uses as much as digits as its factorization.

20061583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20061583 is about 4479.0158517246. The cubic root of 20061583 is about 271.7200794940.

Adding to 20061583 its reverse (38516002), we get a palindrome (58577585).

The spelling of 20061583 in words is "twenty million, sixty-one thousand, five hundred eighty-three".