1172528089 has 4 divisors (see below), whose sum is σ = 1184137380. Its totient is φ = 1160918800.

The previous prime is 1172528083. The next prime is 1172528141. The reversal of 1172528089 is 9808252711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 714225625 + 458302464 = 26725^2 + 21408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1172528089 - 2³ = 1172528081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172528081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5804494 + ... + 5804695.

It is an arithmetic number, because the mean of its divisors is an integer number (296034345).

Almost surely, 2^1172528089 is an apocalyptic number.

It is an amenable number.

1172528089 is a deficient number, since it is larger than the sum of its proper divisors (11609291).

1172528089 is a wasteful number, since it uses less digits than its factorization.

1172528089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11609290.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1172528089 is about 34242.1974908153. The cubic root of 1172528089 is about 1054.4866482672.

The spelling of 1172528089 in words is "one billion, one hundred seventy-two million, five hundred twenty-eight thousand, eighty-nine".