156493 has 2 divisors, whose sum is σ = 156494. Its totient is φ = 156492.

The previous prime is 156491. The next prime is 156511. The reversal of 156493 is 394651.

156493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 162-nd star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149769 + 6724 = 387^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 156493 - 2¹ = 156491 is a prime.

Together with 156491, it forms a pair of twin primes.

156493 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78246 + 78247.

It is an arithmetic number, because the mean of its divisors is an integer number (78247).

2¹⁵⁶⁴⁹³ is an apocalyptic number.

It is an amenable number.

156493 is a deficient number, since it is larger than the sum of its proper divisors (1).

156493 is an equidigital number, since it uses as much as digits as its factorization.

156493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 156493 is about 395.5919614957. The cubic root of 156493 is about 53.8887742624. Note that the first 3 decimals are identical.

The spelling of 156493 in words is "one hundred fifty-six thousand, four hundred ninety-three".