12457457 has 2 divisors, whose sum is σ = 12457458. Its totient is φ = 12457456.

The previous prime is 12457453. The next prime is 12457499. The reversal of 12457457 is 75475421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8755681 + 3701776 = 2959^2 + 1924^2 .

It is a cyclic number.

It is not a de Polignac number, because 12457457 - 2² = 12457453 is a prime.

It is not a weakly prime, because it can be changed into another prime (12457451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228728 + 6228729.

It is an arithmetic number, because the mean of its divisors is an integer number (6228729).

Almost surely, 2^12457457 is an apocalyptic number.

It is an amenable number.

12457457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12457457 is an equidigital number, since it uses as much as digits as its factorization.

12457457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 35.

The square root of 12457457 is about 3529.5122892547. The cubic root of 12457457 is about 231.8158529329.

The spelling of 12457457 in words is "twelve million, four hundred fifty-seven thousand, four hundred fifty-seven".