921133 has 2 divisors, whose sum is σ = 921134. Its totient is φ = 921132.

The previous prime is 921121. The next prime is 921143. The reversal of 921133 is 331129.

921133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514089 + 407044 = 717^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 921133 - 2¹³ = 912941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 921133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460566 + 460567.

It is an arithmetic number, because the mean of its divisors is an integer number (460567).

2⁹²¹¹³³ is an apocalyptic number.

It is an amenable number.

921133 is a deficient number, since it is larger than the sum of its proper divisors (1).

921133 is an equidigital number, since it uses as much as digits as its factorization.

921133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 19.

The square root of 921133 is about 959.7567400128. The cubic root of 921133 is about 97.2987917195.

It can be divided in two parts, 92 and 1133, that added together give a triangular number (1225 = T₄₉).

The spelling of 921133 in words is "nine hundred twenty-one thousand, one hundred thirty-three".