1150821 has 16 divisors (see below), whose sum is σ = 1948800. Its totient is φ = 657504.

The previous prime is 1150783. The next prime is 1150823. The reversal of 1150821 is 1280511.

It is not a de Polignac number, because 1150821 - 2⁶ = 1150757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1150794 and 1150803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2856 + ... + 3233.

It is an arithmetic number, because the mean of its divisors is an integer number (121800).

2^1150821 is an apocalyptic number.

It is an amenable number.

1150821 is a deficient number, since it is larger than the sum of its proper divisors (797979).

1150821 is an equidigital number, since it uses as much as digits as its factorization.

1150821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105 (or 6099 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1150821 is about 1072.7632544043. The cubic root of 1150821 is about 104.7938813610.

The spelling of 1150821 in words is "one million, one hundred fifty thousand, eight hundred twenty-one".