156393 has 6 divisors (see below), whose sum is σ = 225914. Its totient is φ = 104256.

The previous prime is 156371. The next prime is 156419. The reversal of 156393 is 393651.

156393 is nontrivially palindromic in base 15.

156393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 97344 + 59049 = 312^2 + 243^2 .

It is not a de Polignac number, because 156393 - 2⁵ = 156361 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 156393.

It is not an unprimeable number, because it can be changed into a prime (156353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8680 + ... + 8697.

2¹⁵⁶³⁹³ is an apocalyptic number.

It is an amenable number.

156393 is a deficient number, since it is larger than the sum of its proper divisors (69521).

156393 is a wasteful number, since it uses less digits than its factorization.

156393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17383 (or 17380 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 156393 is about 395.4655484363. The cubic root of 156393 is about 53.8772933960.

The spelling of 156393 in words is "one hundred fifty-six thousand, three hundred ninety-three".