1267055477 has 2 divisors, whose sum is σ = 1267055478. Its totient is φ = 1267055476.

The previous prime is 1267055453. The next prime is 1267055479. The reversal of 1267055477 is 7745507621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1225980196 + 41075281 = 35014^2 + 6409^2 .

It is an emirp because it is prime and its reverse (7745507621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1267055477 - 2¹⁴ = 1267039093 is a prime.

Together with 1267055479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1267055479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633527738 + 633527739.

It is an arithmetic number, because the mean of its divisors is an integer number (633527739).

Almost surely, 2^1267055477 is an apocalyptic number.

It is an amenable number.

1267055477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267055477 is an equidigital number, since it uses as much as digits as its factorization.

1267055477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 44.

The square root of 1267055477 is about 35595.7227346208. The cubic root of 1267055477 is about 1082.0945511724.

The spelling of 1267055477 in words is "one billion, two hundred sixty-seven million, fifty-five thousand, four hundred seventy-seven".