823153 has 2 divisors, whose sum is σ = 823154. Its totient is φ = 823152.

The previous prime is 823129. The next prime is 823169. The reversal of 823153 is 351328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 7744 = 903^2 + 88^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823153 is a prime.

It is a super-2 number, since 2×823153² = 1355161722818, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (823183) 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, 411576 + 411577.

It is an arithmetic number, because the mean of its divisors is an integer number (411577).

2⁸²³¹⁵³ is an apocalyptic number.

It is an amenable number.

823153 is a deficient number, since it is larger than the sum of its proper divisors (1).

823153 is an equidigital number, since it uses as much as digits as its factorization.

823153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 823153 is about 907.2777964879. The cubic root of 823153 is about 93.7188293410.

The spelling of 823153 in words is "eight hundred twenty-three thousand, one hundred fifty-three".