20000507 has 2 divisors, whose sum is σ = 20000508. Its totient is φ = 20000506.

The previous prime is 20000503. The next prime is 20000531. The reversal of 20000507 is 70500002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000507 - 2² = 20000503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20000491 and 20000500.

It is not a weakly prime, because it can be changed into another prime (20000503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000253 + 10000254.

It is an arithmetic number, because the mean of its divisors is an integer number (10000254).

Almost surely, 2^20000507 is an apocalyptic number.

20000507 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000507 is an equidigital number, since it uses as much as digits as its factorization.

20000507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70, while the sum is 14.

The square root of 20000507 is about 4472.1926389636. The cubic root of 20000507 is about 271.4440553230. Note that the first 3 decimals are identical.

Adding to 20000507 its reverse (70500002), we get a palindrome (90500509).

The spelling of 20000507 in words is "twenty million, five hundred seven", and thus it is an aban number.