20652523 has 2 divisors, whose sum is σ = 20652524. Its totient is φ = 20652522.

The previous prime is 20652521. The next prime is 20652547. The reversal of 20652523 is 32525602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20652523 - 2¹ = 20652521 is a prime.

Together with 20652521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20652521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10326261 + 10326262.

It is an arithmetic number, because the mean of its divisors is an integer number (10326262).

Almost surely, 2^20652523 is an apocalyptic number.

20652523 is a deficient number, since it is larger than the sum of its proper divisors (1).

20652523 is an equidigital number, since it uses as much as digits as its factorization.

20652523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20652523 is about 4544.5047034853. The cubic root of 20652523 is about 274.3622599301.

The spelling of 20652523 in words is "twenty million, six hundred fifty-two thousand, five hundred twenty-three".