20530252 has 6 divisors (see below), whose sum is σ = 35927948. Its totient is φ = 10265124.

The previous prime is 20530247. The next prime is 20530261. The reversal of 20530252 is 25203502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2566278 + ... + 2566285.

Almost surely, 2^20530252 is an apocalyptic number.

It is an amenable number.

20530252 is a deficient number, since it is larger than the sum of its proper divisors (15397696).

20530252 is a wasteful number, since it uses less digits than its factorization.

20530252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132567 (or 5132565 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20530252 is about 4531.0321120027. The cubic root of 20530252 is about 273.8197439805.

Adding to 20530252 its reverse (25203502), we get a palindrome (45733754).

The spelling of 20530252 in words is "twenty million, five hundred thirty thousand, two hundred fifty-two".