1145440277 has 2 divisors, whose sum is σ = 1145440278. Its totient is φ = 1145440276.

The previous prime is 1145440271. The next prime is 1145440333. The reversal of 1145440277 is 7720445411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120977361 + 24462916 = 33481^2 + 4946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145440277 - 2²⁰ = 1144391701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145440271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572720138 + 572720139.

It is an arithmetic number, because the mean of its divisors is an integer number (572720139).

Almost surely, 2^1145440277 is an apocalyptic number.

It is an amenable number.

1145440277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145440277 is an equidigital number, since it uses as much as digits as its factorization.

1145440277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 1145440277 is about 33844.3536945234. The cubic root of 1145440277 is about 1046.3030308842.

Adding to 1145440277 its reverse (7720445411), we get a palindrome (8865885688).

The spelling of 1145440277 in words is "one billion, one hundred forty-five million, four hundred forty thousand, two hundred seventy-seven".