12548531 has 4 divisors (see below), whose sum is σ = 13209000. Its totient is φ = 11888064.

The previous prime is 12548491. The next prime is 12548551. The reversal of 12548531 is 13584521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12548531 - 2⁶ = 12548467 is a prime.

It is a super-2 number, since 2×12548531² = 314931260515922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12548494 and 12548503.

It is not an unprimeable number, because it can be changed into a prime (12548551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330206 + ... + 330243.

It is an arithmetic number, because the mean of its divisors is an integer number (3302250).

Almost surely, 2^12548531 is an apocalyptic number.

12548531 is a deficient number, since it is larger than the sum of its proper divisors (660469).

12548531 is an equidigital number, since it uses as much as digits as its factorization.

12548531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660468.

The product of its digits is 4800, while the sum is 29.

The square root of 12548531 is about 3542.3905769974. The cubic root of 12548531 is about 232.3794017488.

The spelling of 12548531 in words is "twelve million, five hundred forty-eight thousand, five hundred thirty-one".