1445256677 has 2 divisors, whose sum is σ = 1445256678. Its totient is φ = 1445256676.

The previous prime is 1445256647. The next prime is 1445256689. The reversal of 1445256677 is 7766525441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894368836 + 550887841 = 29906^2 + 23471^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445256677 - 2⁶ = 1445256613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445256647) 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, 722628338 + 722628339.

It is an arithmetic number, because the mean of its divisors is an integer number (722628339).

Almost surely, 2^1445256677 is an apocalyptic number.

It is an amenable number.

1445256677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445256677 is an equidigital number, since it uses as much as digits as its factorization.

1445256677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 47.

The square root of 1445256677 is about 38016.5316277011. The cubic root of 1445256677 is about 1130.6156555848.

The spelling of 1445256677 in words is "one billion, four hundred forty-five million, two hundred fifty-six thousand, six hundred seventy-seven".