12581057 has 4 divisors (see below), whose sum is σ = 12732720. Its totient is φ = 12429396.

The previous prime is 12581053. The next prime is 12581077. The reversal of 12581057 is 75018521.

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: 75018521 = 193 ⋅388697.

It is a cyclic number.

It is not a de Polignac number, because 12581057 - 2² = 12581053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12581053) 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, 75707 + ... + 75872.

It is an arithmetic number, because the mean of its divisors is an integer number (3183180).

Almost surely, 2^12581057 is an apocalyptic number.

It is an amenable number.

12581057 is a deficient number, since it is larger than the sum of its proper divisors (151663).

12581057 is an equidigital number, since it uses as much as digits as its factorization.

12581057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151662.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 12581057 is about 3546.9785733776. The cubic root of 12581057 is about 232.5800056106.

Adding to 12581057 its reverse (75018521), we get a palindrome (87599578).

The spelling of 12581057 in words is "twelve million, five hundred eighty-one thousand, fifty-seven".