1205251 has 2 divisors, whose sum is σ = 1205252. Its totient is φ = 1205250.

The previous prime is 1205231. The next prime is 1205257. The reversal of 1205251 is 1525021.

It is a strong prime.

It is an emirp because it is prime and its reverse (1525021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1205251 - 2⁵ = 1205219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1205257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602625 + 602626.

It is an arithmetic number, because the mean of its divisors is an integer number (602626).

2^1205251 is an apocalyptic number.

1205251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205251 is an equidigital number, since it uses as much as digits as its factorization.

1205251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1205251 is about 1097.8392414193. The cubic root of 1205251 is about 106.4206319404.

The spelling of 1205251 in words is "one million, two hundred five thousand, two hundred fifty-one".