12532531 has 4 divisors (see below), whose sum is σ = 13671864. Its totient is φ = 11393200.

The previous prime is 12532517. The next prime is 12532537. The reversal of 12532531 is 13523521.

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 12532531 - 2¹³ = 12524339 is a prime.

It is a super-2 number, since 2×12532531² = 314128666531922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12532537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569650 + ... + 569671.

It is an arithmetic number, because the mean of its divisors is an integer number (3417966).

Almost surely, 2^12532531 is an apocalyptic number.

12532531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12532531 is a deficient number, since it is larger than the sum of its proper divisors (1139333).

12532531 is a wasteful number, since it uses less digits than its factorization.

12532531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139332.

The product of its digits is 900, while the sum is 22.

The square root of 12532531 is about 3540.1314947329. The cubic root of 12532531 is about 232.2805946510.

The spelling of 12532531 in words is "twelve million, five hundred thirty-two thousand, five hundred thirty-one".