1151265 has 32 divisors (see below), whose sum is σ = 1990656. Its totient is φ = 566720.

The previous prime is 1151251. The next prime is 1151287. The reversal of 1151265 is 5621511.

It is not a de Polignac number, because 1151265 - 2⁵ = 1151233 is a prime.

It is a super-2 number, since 2×1151265² = 2650822200450, which contains 22 as substring.

1151265 is a modest number, since divided by 1265 gives 115 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16180 + ... + 16250.

It is an arithmetic number, because the mean of its divisors is an integer number (62208).

2^1151265 is an apocalyptic number.

1151265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1151265 is a deficient number, since it is larger than the sum of its proper divisors (839391).

1151265 is a wasteful number, since it uses less digits than its factorization.

1151265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its digits is 300, while the sum is 21.

The square root of 1151265 is about 1072.9701766592. The cubic root of 1151265 is about 104.8073565238.

Adding to 1151265 its reverse (5621511), we get a palindrome (6772776).

The spelling of 1151265 in words is "one million, one hundred fifty-one thousand, two hundred sixty-five".