12531466 has 4 divisors (see below), whose sum is σ = 18797202. Its totient is φ = 6265732.

The previous prime is 12531461. The next prime is 12531473. The reversal of 12531466 is 66413521.

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

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 594441 = 3455^2 + 771^2 .

It is not an unprimeable number, because it can be changed into a prime (12531461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132865 + ... + 3132868.

Almost surely, 2^12531466 is an apocalyptic number.

12531466 is a deficient number, since it is larger than the sum of its proper divisors (6265736).

12531466 is an equidigital number, since it uses as much as digits as its factorization.

12531466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265735.

The product of its digits is 4320, while the sum is 28.

The square root of 12531466 is about 3539.9810733957. The cubic root of 12531466 is about 232.2740148191.

Adding to 12531466 its reverse (66413521), we get a palindrome (78944987).

The spelling of 12531466 in words is "twelve million, five hundred thirty-one thousand, four hundred sixty-six".