1255534997 has 2 divisors, whose sum is σ = 1255534998. Its totient is φ = 1255534996.

The previous prime is 1255534963. The next prime is 1255535003. The reversal of 1255534997 is 7994355521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1156612081 + 98922916 = 34009^2 + 9946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255534997 - 2¹⁸ = 1255272853 is a prime.

It is a super-3 number, since 3×1255534997³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255534697) 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 as a sum of consecutive naturals, namely, 627767498 + 627767499.

It is an arithmetic number, because the mean of its divisors is an integer number (627767499).

Almost surely, 2^1255534997 is an apocalyptic number.

It is an amenable number.

1255534997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255534997 is an equidigital number, since it uses as much as digits as its factorization.

1255534997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701000, while the sum is 50.

The square root of 1255534997 is about 35433.5292766611. The cubic root of 1255534997 is about 1078.8049759142.

The spelling of 1255534997 in words is "one billion, two hundred fifty-five million, five hundred thirty-four thousand, nine hundred ninety-seven".