12941581 has 4 divisors (see below), whose sum is σ = 13242592. Its totient is φ = 12640572.

The previous prime is 12941561. The next prime is 12941597. The reversal of 12941581 is 18514921.

It is a happy number.

12941581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18514921 = 17 ⋅1089113.

It is a cyclic number.

It is not a de Polignac number, because 12941581 - 2⁵ = 12941549 is a prime.

It is a super-2 number, since 2×12941581² = 334969037559122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12941531) 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, 150441 + ... + 150526.

It is an arithmetic number, because the mean of its divisors is an integer number (3310648).

Almost surely, 2^12941581 is an apocalyptic number.

It is an amenable number.

12941581 is a deficient number, since it is larger than the sum of its proper divisors (301011).

12941581 is an equidigital number, since it uses as much as digits as its factorization.

12941581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301010.

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

The square root of 12941581 is about 3597.4408959704. The cubic root of 12941581 is about 234.7807280157.

The spelling of 12941581 in words is "twelve million, nine hundred forty-one thousand, five hundred eighty-one".