20061523 has 2 divisors, whose sum is σ = 20061524. Its totient is φ = 20061522.

The previous prime is 20061499. The next prime is 20061539. The reversal of 20061523 is 32516002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20061523 - 2⁵ = 20061491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20061523.

It is not a weakly prime, because it can be changed into another prime (20061553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030761 + 10030762.

It is an arithmetic number, because the mean of its divisors is an integer number (10030762).

Almost surely, 2^20061523 is an apocalyptic number.

20061523 is a deficient number, since it is larger than the sum of its proper divisors (1).

20061523 is an equidigital number, since it uses as much as digits as its factorization.

20061523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20061523 is about 4479.0091538196. The cubic root of 20061523 is about 271.7198086078.

Adding to 20061523 its reverse (32516002), we get a palindrome (52577525).

The spelling of 20061523 in words is "twenty million, sixty-one thousand, five hundred twenty-three".