20052513 has 24 divisors (see below), whose sum is σ = 31344768. Its totient is φ = 12280032.

The previous prime is 20052479. The next prime is 20052521. The reversal of 20052513 is 31525002.

It is a happy number.

It is not a de Polignac number, because 20052513 - 2¹² = 20048417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20052583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42706 + ... + 43172.

It is an arithmetic number, because the mean of its divisors is an integer number (1306032).

Almost surely, 2^20052513 is an apocalyptic number.

It is an amenable number.

20052513 is a deficient number, since it is larger than the sum of its proper divisors (11292255).

20052513 is a wasteful number, since it uses less digits than its factorization.

20052513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20052513 is about 4478.0032380515. The cubic root of 20052513 is about 271.6791243906.

Adding to 20052513 its reverse (31525002), we get a palindrome (51577515).

The spelling of 20052513 in words is "twenty million, fifty-two thousand, five hundred thirteen".