1255053017 has 4 divisors (see below), whose sum is σ = 1255354020. Its totient is φ = 1254752016.

The previous prime is 1255052993. The next prime is 1255053077. The reversal of 1255053017 is 7103505521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1154572441 + 100480576 = 33979^2 + 10024^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255053017 - 2²⁰ = 1254004441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255053077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144158 + ... + 152615.

It is an arithmetic number, because the mean of its divisors is an integer number (313838505).

Almost surely, 2^1255053017 is an apocalyptic number.

It is an amenable number.

1255053017 is a deficient number, since it is larger than the sum of its proper divisors (301003).

1255053017 is an equidigital number, since it uses as much as digits as its factorization.

1255053017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301002.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 1255053017 is about 35426.7274384750. The cubic root of 1255053017 is about 1078.6669128647. Note that the first 3 decimals are identical.

Adding to 1255053017 its reverse (7103505521), we get a palindrome (8358558538).

The spelling of 1255053017 in words is "one billion, two hundred fifty-five million, fifty-three thousand, seventeen".