20860523 has 2 divisors, whose sum is σ = 20860524. Its totient is φ = 20860522.

The previous prime is 20860507. The next prime is 20860549. The reversal of 20860523 is 32506802.

It is an a-pointer prime, because the next prime (20860549) can be obtained adding 20860523 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20860523 - 2⁴ = 20860507 is a prime.

It is a super-2 number, since 2×20860523² = 870322839667058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20860492 and 20860501.

It is not a weakly prime, because it can be changed into another prime (20860823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10430261 + 10430262.

It is an arithmetic number, because the mean of its divisors is an integer number (10430262).

Almost surely, 2^20860523 is an apocalyptic number.

20860523 is a deficient number, since it is larger than the sum of its proper divisors (1).

20860523 is an equidigital number, since it uses as much as digits as its factorization.

20860523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20860523 is about 4567.3321534568. The cubic root of 20860523 is about 275.2802564384.

The spelling of 20860523 in words is "twenty million, eight hundred sixty thousand, five hundred twenty-three".