1151011 has 4 divisors (see below), whose sum is σ = 1155024. Its totient is φ = 1147000.

The previous prime is 1150987. The next prime is 1151021. The reversal of 1151011 is 1101511.

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

It is a cyclic number.

It is not a de Polignac number, because 1151011 - 2¹¹ = 1148963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1540 + ... + 2161.

It is an arithmetic number, because the mean of its divisors is an integer number (288756).

2^1151011 is an apocalyptic number.

1151011 is a deficient number, since it is larger than the sum of its proper divisors (4013).

1151011 is an equidigital number, since it uses as much as digits as its factorization.

1151011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012.

The product of its (nonzero) digits is 5, while the sum is 10.

The square root of 1151011 is about 1072.8518071011. The cubic root of 1151011 is about 104.7996481837.

Adding to 1151011 its reverse (1101511), we get a palindrome (2252522).

The spelling of 1151011 in words is "one million, one hundred fifty-one thousand, eleven".