1255057747 has 2 divisors, whose sum is σ = 1255057748. Its totient is φ = 1255057746.

The previous prime is 1255057733. The next prime is 1255057763. The reversal of 1255057747 is 7477505521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255057747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255057547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627528873 + 627528874.

It is an arithmetic number, because the mean of its divisors is an integer number (627528874).

Almost surely, 2^1255057747 is an apocalyptic number.

1255057747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255057747 is an equidigital number, since it uses as much as digits as its factorization.

1255057747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 343000, while the sum is 43.

The square root of 1255057747 is about 35426.7941959190. The cubic root of 1255057747 is about 1078.6682679437.

The spelling of 1255057747 in words is "one billion, two hundred fifty-five million, fifty-seven thousand, seven hundred forty-seven".