20524013 has 2 divisors, whose sum is σ = 20524014. Its totient is φ = 20524012.

The previous prime is 20524003. The next prime is 20524037. The reversal of 20524013 is 31042502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16752649 + 3771364 = 4093^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 20524013 - 2⁶ = 20523949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20523982 and 20524000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20524003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262006 + 10262007.

It is an arithmetic number, because the mean of its divisors is an integer number (10262007).

Almost surely, 2^20524013 is an apocalyptic number.

It is an amenable number.

20524013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20524013 is an equidigital number, since it uses as much as digits as its factorization.

20524013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20524013 is about 4530.3435852041. The cubic root of 20524013 is about 273.7920038686.

Adding to 20524013 its reverse (31042502), we get a palindrome (51566515).

The spelling of 20524013 in words is "twenty million, five hundred twenty-four thousand, thirteen".