20486539 has 2 divisors, whose sum is σ = 20486540. Its totient is φ = 20486538.

The previous prime is 20486527. The next prime is 20486551. The reversal of 20486539 is 93568402.

It is a balanced prime because it is at equal distance from previous prime (20486527) and next prime (20486551).

It is a cyclic number.

It is not a de Polignac number, because 20486539 - 2⁵ = 20486507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20486498 and 20486507.

It is not a weakly prime, because it can be changed into another prime (20486509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10243269 + 10243270.

It is an arithmetic number, because the mean of its divisors is an integer number (10243270).

Almost surely, 2^20486539 is an apocalyptic number.

20486539 is a deficient number, since it is larger than the sum of its proper divisors (1).

20486539 is an equidigital number, since it uses as much as digits as its factorization.

20486539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 20486539 is about 4526.2058061913. The cubic root of 20486539 is about 273.6252669445.

It can be divided in two parts, 20486 and 539, that added together give a square (21025 = 145²).

The spelling of 20486539 in words is "twenty million, four hundred eighty-six thousand, five hundred thirty-nine".