1145255213 has 2 divisors, whose sum is σ = 1145255214. Its totient is φ = 1145255212.

The previous prime is 1145255203. The next prime is 1145255263. The reversal of 1145255213 is 3125525411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134477124 + 10778089 = 33682^2 + 3283^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145255213 - 2¹⁶ = 1145189677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145255203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572627606 + 572627607.

It is an arithmetic number, because the mean of its divisors is an integer number (572627607).

Almost surely, 2^1145255213 is an apocalyptic number.

It is an amenable number.

1145255213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145255213 is an equidigital number, since it uses as much as digits as its factorization.

1145255213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 29.

The square root of 1145255213 is about 33841.6195386687. The cubic root of 1145255213 is about 1046.2466789128.

The spelling of 1145255213 in words is "one billion, one hundred forty-five million, two hundred fifty-five thousand, two hundred thirteen".