1151065 has 4 divisors (see below), whose sum is σ = 1381284. Its totient is φ = 920848.

The previous prime is 1151063. The next prime is 1151069. The reversal of 1151065 is 5601511.

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 597529 + 553536 = 773^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151065 - 2¹ = 1151063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151063) 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, 115102 + ... + 115111.

It is an arithmetic number, because the mean of its divisors is an integer number (345321).

2^1151065 is an apocalyptic number.

It is an amenable number.

1151065 is a deficient number, since it is larger than the sum of its proper divisors (230219).

1151065 is an equidigital number, since it uses as much as digits as its factorization.

1151065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230218.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1151065 is about 1072.8769733758. The cubic root of 1151065 is about 104.8012870595.

Adding to 1151065 its reverse (5601511), we get a palindrome (6752576).

It can be divided in two parts, 11 and 51065, that added together give a square (51076 = 226²).

The spelling of 1151065 in words is "one million, one hundred fifty-one thousand, sixty-five".