1151001 has 24 divisors (see below), whose sum is σ = 1797120. Its totient is φ = 707616.

The previous prime is 1150987. The next prime is 1151021. The reversal of 1151001 is 1001511.

It is not a de Polignac number, because 1151001 - 2⁷ = 1150873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

1151001 is a lucky 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 23 ways as a sum of consecutive naturals, for example, 9000 + ... + 9126.

It is an arithmetic number, because the mean of its divisors is an integer number (74880).

2^1151001 is an apocalyptic number.

It is an amenable number.

1151001 is a deficient number, since it is larger than the sum of its proper divisors (646119).

1151001 is a wasteful number, since it uses less digits than its factorization.

1151001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

The square root of 1151001 is about 1072.8471466150. The cubic root of 1151001 is about 104.7993446825.

Adding to 1151001 its reverse (1001511), we get a palindrome (2152512).

The spelling of 1151001 in words is "one million, one hundred fifty-one thousand, one".