20460523 has 2 divisors, whose sum is σ = 20460524. Its totient is φ = 20460522.

The previous prime is 20460467. The next prime is 20460529. The reversal of 20460523 is 32506402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20460523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20460494 and 20460503.

It is not a weakly prime, because it can be changed into another prime (20460529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10230261 + 10230262.

It is an arithmetic number, because the mean of its divisors is an integer number (10230262).

Almost surely, 2^20460523 is an apocalyptic number.

20460523 is a deficient number, since it is larger than the sum of its proper divisors (1).

20460523 is an equidigital number, since it uses as much as digits as its factorization.

20460523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20460523 is about 4523.3309629078. The cubic root of 20460523 is about 273.5093916633.

Adding to 20460523 its reverse (32506402), we get a palindrome (52966925).

The spelling of 20460523 in words is "twenty million, four hundred sixty thousand, five hundred twenty-three".