12255457 has 2 divisors, whose sum is σ = 12255458. Its totient is φ = 12255456.

The previous prime is 12255431. The next prime is 12255461. The reversal of 12255457 is 75455221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11316496 + 938961 = 3364^2 + 969^2 .

It is an emirp because it is prime and its reverse (75455221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12255457 is a prime.

It is not a weakly prime, because it can be changed into another prime (12255427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6127728 + 6127729.

It is an arithmetic number, because the mean of its divisors is an integer number (6127729).

Almost surely, 2^12255457 is an apocalyptic number.

It is an amenable number.

12255457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12255457 is an equidigital number, since it uses as much as digits as its factorization.

12255457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14000, while the sum is 31.

The square root of 12255457 is about 3500.7794846291. The cubic root of 12255457 is about 230.5560396586.

The spelling of 12255457 in words is "twelve million, two hundred fifty-five thousand, four hundred fifty-seven".