1150921 has 2 divisors, whose sum is σ = 1150922. Its totient is φ = 1150920.

The previous prime is 1150909. The next prime is 1150927. The reversal of 1150921 is 1290511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 741321 + 409600 = 861^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150921 - 2¹⁷ = 1019849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1150927) 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 as a sum of consecutive naturals, namely, 575460 + 575461.

It is an arithmetic number, because the mean of its divisors is an integer number (575461).

2^1150921 is an apocalyptic number.

It is an amenable number.

1150921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150921 is an equidigital number, since it uses as much as digits as its factorization.

1150921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1150921 is about 1072.8098619979. The cubic root of 1150921 is about 104.7969166099.

The spelling of 1150921 in words is "one million, one hundred fifty thousand, nine hundred twenty-one".