20532013 has 4 divisors (see below), whose sum is σ = 21194368. Its totient is φ = 19869660.

The previous prime is 20532011. The next prime is 20532037. The reversal of 20532013 is 31023502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20532013 - 2¹ = 20532011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532011) 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 in 3 ways as a sum of consecutive naturals, for example, 331131 + ... + 331192.

It is an arithmetic number, because the mean of its divisors is an integer number (5298592).

Almost surely, 2^20532013 is an apocalyptic number.

It is an amenable number.

20532013 is a deficient number, since it is larger than the sum of its proper divisors (662355).

20532013 is an equidigital number, since it uses as much as digits as its factorization.

20532013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662354.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20532013 is about 4531.2264344215. The cubic root of 20532013 is about 273.8275727979.

Adding to 20532013 its reverse (31023502), we get a palindrome (51555515).

The spelling of 20532013 in words is "twenty million, five hundred thirty-two thousand, thirteen".