12531554 has 12 divisors (see below), whose sum is σ = 21866454. Its totient is φ = 5370624.

The previous prime is 12531553. The next prime is 12531569. The reversal of 12531554 is 45513521.

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 4092529 = 2905^2 + 2023^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63839 + ... + 64034.

Almost surely, 2^12531554 is an apocalyptic number.

12531554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12531554 is a deficient number, since it is larger than the sum of its proper divisors (9334900).

12531554 is a wasteful number, since it uses less digits than its factorization.

12531554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127889 (or 127882 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 12531554 is about 3539.9935028189. The cubic root of 12531554 is about 232.2745585189.

The spelling of 12531554 in words is "twelve million, five hundred thirty-one thousand, five hundred fifty-four".