12559531 has 2 divisors, whose sum is σ = 12559532. Its totient is φ = 12559530.

The previous prime is 12559501. The next prime is 12559543. The reversal of 12559531 is 13595521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12559531 - 2¹¹ = 12557483 is a prime.

It is a super-2 number, since 2×12559531² = 315483637879922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12559493 and 12559502.

It is not a weakly prime, because it can be changed into another prime (12559501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279765 + 6279766.

It is an arithmetic number, because the mean of its divisors is an integer number (6279766).

Almost surely, 2^12559531 is an apocalyptic number.

12559531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12559531 is an equidigital number, since it uses as much as digits as its factorization.

12559531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 31.

The square root of 12559531 is about 3543.9428607132. The cubic root of 12559531 is about 232.4472829181.

It can be divided in two parts, 125595 and 31, that multiplied together give a triangular number (3893445 = T₂₇₉₀).

The spelling of 12559531 in words is "twelve million, five hundred fifty-nine thousand, five hundred thirty-one".