1275553 has 2 divisors, whose sum is σ = 1275554. Its totient is φ = 1275552.

The previous prime is 1275541. The next prime is 1275559. The reversal of 1275553 is 3555721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1183744 + 91809 = 1088^2 + 303^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275553 - 2⁹ = 1275041 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637776 + 637777.

It is an arithmetic number, because the mean of its divisors is an integer number (637777).

2^1275553 is an apocalyptic number.

It is an amenable number.

1275553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275553 is an equidigital number, since it uses as much as digits as its factorization.

1275553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5250, while the sum is 28.

The square root of 1275553 is about 1129.4038250334. The cubic root of 1275553 is about 108.4508190252.

The spelling of 1275553 in words is "one million, two hundred seventy-five thousand, five hundred fifty-three".