12571457 has 2 divisors, whose sum is σ = 12571458. Its totient is φ = 12571456.

The previous prime is 12571439. The next prime is 12571469. The reversal of 12571457 is 75417521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12418576 + 152881 = 3524^2 + 391^2 .

It is a cyclic number.

It is not a de Polignac number, because 12571457 - 2⁶ = 12571393 is a prime.

It is a super-2 number, since 2×12571457² = 316083062205698, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12571417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6285728 + 6285729.

It is an arithmetic number, because the mean of its divisors is an integer number (6285729).

Almost surely, 2^12571457 is an apocalyptic number.

It is an amenable number.

12571457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12571457 is an equidigital number, since it uses as much as digits as its factorization.

12571457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 32.

The square root of 12571457 is about 3545.6250506787. The cubic root of 12571457 is about 232.5208336825.

Adding to 12571457 its reverse (75417521), we get a palindrome (87988978).

The spelling of 12571457 in words is "twelve million, five hundred seventy-one thousand, four hundred fifty-seven".