1277453057 has 2 divisors, whose sum is σ = 1277453058. Its totient is φ = 1277453056.

The previous prime is 1277453039. The next prime is 1277453059. The reversal of 1277453057 is 7503547721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 715241536 + 562211521 = 26744^2 + 23711^2 .

It is an emirp because it is prime and its reverse (7503547721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1277453057 - 2⁶ = 1277452993 is a prime.

Together with 1277453059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1277453059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638726528 + 638726529.

It is an arithmetic number, because the mean of its divisors is an integer number (638726529).

Almost surely, 2^1277453057 is an apocalyptic number.

It is an amenable number.

1277453057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277453057 is an equidigital number, since it uses as much as digits as its factorization.

1277453057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 205800, while the sum is 41.

The square root of 1277453057 is about 35741.4753053088. The cubic root of 1277453057 is about 1085.0464156490.

The spelling of 1277453057 in words is "one billion, two hundred seventy-seven million, four hundred fifty-three thousand, fifty-seven".