12072257 has 2 divisors, whose sum is σ = 12072258. Its totient is φ = 12072256.

The previous prime is 12072253. The next prime is 12072271. The reversal of 12072257 is 75227021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10086976 + 1985281 = 3176^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 12072257 - 2² = 12072253 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12072251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6036128 + 6036129.

It is an arithmetic number, because the mean of its divisors is an integer number (6036129).

Almost surely, 2^12072257 is an apocalyptic number.

It is an amenable number.

12072257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12072257 is an equidigital number, since it uses as much as digits as its factorization.

12072257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 12072257 is about 3474.5153618886. The cubic root of 12072257 is about 229.4014493576.

Adding to 12072257 its reverse (75227021), we get a palindrome (87299278).

The spelling of 12072257 in words is "twelve million, seventy-two thousand, two hundred fifty-seven".