1151205 has 16 divisors (see below), whose sum is σ = 2009664. Its totient is φ = 558080.

The previous prime is 1151203. The next prime is 1151209. The reversal of 1151205 is 5021511.

It is not a de Polignac number, because 1151205 - 2¹ = 1151203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3324 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (125604).

2^1151205 is an apocalyptic number.

1151205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1151205 is a deficient number, since it is larger than the sum of its proper divisors (858459).

1151205 is a wasteful number, since it uses less digits than its factorization.

1151205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1151205 is about 1072.9422165243. The cubic root of 1151205 is about 104.8055357583.

Adding to 1151205 its reverse (5021511), we get a palindrome (6172716).

The spelling of 1151205 in words is "one million, one hundred fifty-one thousand, two hundred five".