1145297233 has 2 divisors, whose sum is σ = 1145297234. Its totient is φ = 1145297232.

The previous prime is 1145297227. The next prime is 1145297339. The reversal of 1145297233 is 3327925411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135487809 + 9809424 = 33697^2 + 3132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145297233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1145297192 and 1145297201.

It is not a weakly prime, because it can be changed into another prime (1145295233) 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, 572648616 + 572648617.

It is an arithmetic number, because the mean of its divisors is an integer number (572648617).

Almost surely, 2^1145297233 is an apocalyptic number.

It is an amenable number.

1145297233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145297233 is an equidigital number, since it uses as much as digits as its factorization.

1145297233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 1145297233 is about 33842.2403661460. The cubic root of 1145297233 is about 1046.2594745317.

It can be divided in two parts, 1145 and 297233, that added together give a triangular number (298378 = T₇₇₂).

The spelling of 1145297233 in words is "one billion, one hundred forty-five million, two hundred ninety-seven thousand, two hundred thirty-three".