1255445171 has 2 divisors, whose sum is σ = 1255445172. Its totient is φ = 1255445170.

The previous prime is 1255445143. The next prime is 1255445183. The reversal of 1255445171 is 1715445521.

It is a strong prime.

It is an emirp because it is prime and its reverse (1715445521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255445171 is a prime.

It is a super-2 number, since 2×1255445171² = 3152285154774438482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1255445371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627722585 + 627722586.

It is an arithmetic number, because the mean of its divisors is an integer number (627722586).

Almost surely, 2^1255445171 is an apocalyptic number.

1255445171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255445171 is an equidigital number, since it uses as much as digits as its factorization.

1255445171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28000, while the sum is 35.

The square root of 1255445171 is about 35432.2617257211. The cubic root of 1255445171 is about 1078.7792479584.

The spelling of 1255445171 in words is "one billion, two hundred fifty-five million, four hundred forty-five thousand, one hundred seventy-one".