1152272785 has 8 divisors (see below), whose sum is σ = 1383013800. Its totient is φ = 921627264.

The previous prime is 1152272783. The next prime is 1152272789. The reversal of 1152272785 is 5872722511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1774224 + 1150498561 = 1332^2 + 33919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1152272785 - 2¹ = 1152272783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1152272783) 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 in 7 ways as a sum of consecutive naturals, for example, 6099 + ... + 48391.

It is an arithmetic number, because the mean of its divisors is an integer number (172876725).

Almost surely, 2^1152272785 is an apocalyptic number.

It is an amenable number.

1152272785 is a deficient number, since it is larger than the sum of its proper divisors (230741015).

1152272785 is an equidigital number, since it uses as much as digits as its factorization.

1152272785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47747.

The product of its digits is 78400, while the sum is 40.

The square root of 1152272785 is about 33945.1437616635. The cubic root of 1152272785 is about 1048.3792940865.

The spelling of 1152272785 in words is "one billion, one hundred fifty-two million, two hundred seventy-two thousand, seven hundred eighty-five".