1254071057 has 2 divisors, whose sum is σ = 1254071058. Its totient is φ = 1254071056.

The previous prime is 1254071033. The next prime is 1254071089. The reversal of 1254071057 is 7501704521.

It is an a-pointer prime, because the next prime (1254071089) can be obtained adding 1254071057 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820765201 + 433305856 = 28649^2 + 20816^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254071057 - 2⁸ = 1254070801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1254071017) 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, 627035528 + 627035529.

It is an arithmetic number, because the mean of its divisors is an integer number (627035529).

Almost surely, 2^1254071057 is an apocalyptic number.

It is an amenable number.

1254071057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254071057 is an equidigital number, since it uses as much as digits as its factorization.

1254071057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 1254071057 is about 35412.8656987824. The cubic root of 1254071057 is about 1078.3855212659.

Adding to 1254071057 its reverse (7501704521), we get a palindrome (8755775578).

The spelling of 1254071057 in words is "one billion, two hundred fifty-four million, seventy-one thousand, fifty-seven".