12271957 has 4 divisors (see below), whose sum is σ = 12440140. Its totient is φ = 12103776.

The previous prime is 12271951. The next prime is 12271969. The reversal of 12271957 is 75917221.

12271957 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.

It can be written as a sum of positive squares in 2 ways, for example, as 10699441 + 1572516 = 3271^2 + 1254^2 .

It is a cyclic number.

It is not a de Polignac number, because 12271957 - 2¹¹ = 12269909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271951) 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, 83982 + ... + 84127.

It is an arithmetic number, because the mean of its divisors is an integer number (3110035).

Almost surely, 2^12271957 is an apocalyptic number.

It is an amenable number.

12271957 is a deficient number, since it is larger than the sum of its proper divisors (168183).

12271957 is an equidigital number, since it uses as much as digits as its factorization.

12271957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168182.

The product of its digits is 8820, while the sum is 34.

The square root of 12271957 is about 3503.1353099759. The cubic root of 12271957 is about 230.6594621229.

The spelling of 12271957 in words is "twelve million, two hundred seventy-one thousand, nine hundred fifty-seven".