12519481 has 8 divisors (see below), whose sum is σ = 13510280. Its totient is φ = 11532672.

The previous prime is 12519449. The next prime is 12519487. The reversal of 12519481 is 18491521.

It is a happy number.

12519481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 1445-th star number.

It can be written as a sum of positive squares in 4 ways, for example, as 1229881 + 11289600 = 1109^2 + 3360^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12519481 - 2⁵ = 12519449 is a prime.

It is a super-2 number, since 2×12519481² = 313474809018722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12519487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10525 + ... + 11653.

It is an arithmetic number, because the mean of its divisors is an integer number (1688785).

Almost surely, 2^12519481 is an apocalyptic number.

It is an amenable number.

12519481 is a deficient number, since it is larger than the sum of its proper divisors (990799).

12519481 is a wasteful number, since it uses less digits than its factorization.

12519481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995.

The product of its digits is 2880, while the sum is 31.

The square root of 12519481 is about 3538.2878627947. The cubic root of 12519481 is about 232.1999428255.

The spelling of 12519481 in words is "twelve million, five hundred nineteen thousand, four hundred eighty-one".