1255543277 has 2 divisors, whose sum is σ = 1255543278. Its totient is φ = 1255543276.

The previous prime is 1255543231. The next prime is 1255543291. The reversal of 1255543277 is 7723455521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1005460681 + 250082596 = 31709^2 + 15814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255543277 - 2¹⁴ = 1255526893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255543577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627771638 + 627771639.

It is an arithmetic number, because the mean of its divisors is an integer number (627771639).

Almost surely, 2^1255543277 is an apocalyptic number.

It is an amenable number.

1255543277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255543277 is an equidigital number, since it uses as much as digits as its factorization.

1255543277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294000, while the sum is 41.

The square root of 1255543277 is about 35433.6461149569. The cubic root of 1255543277 is about 1078.8073474094.

Adding to 1255543277 its reverse (7723455521), we get a palindrome (8978998798).

The spelling of 1255543277 in words is "one billion, two hundred fifty-five million, five hundred forty-three thousand, two hundred seventy-seven".