1152265997 has 2 divisors, whose sum is σ = 1152265998. Its totient is φ = 1152265996.

The previous prime is 1152265991. The next prime is 1152265999. The reversal of 1152265997 is 7995622511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1137780361 + 14485636 = 33731^2 + 3806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152265997 - 2¹⁰ = 1152264973 is a prime.

Together with 1152265999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1152265991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576132998 + 576132999.

It is an arithmetic number, because the mean of its divisors is an integer number (576132999).

Almost surely, 2^1152265997 is an apocalyptic number.

It is an amenable number.

1152265997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152265997 is an equidigital number, since it uses as much as digits as its factorization.

1152265997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 47.

The square root of 1152265997 is about 33945.0437766694. The cubic root of 1152265997 is about 1048.3772354268.

The spelling of 1152265997 in words is "one billion, one hundred fifty-two million, two hundred sixty-five thousand, nine hundred ninety-seven".