156506 has 12 divisors (see below), whose sum is σ = 273258. Its totient is φ = 67032.

The previous prime is 156493. The next prime is 156511. The reversal of 156506 is 605651.

156506 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., 148225 + 8281 = 385^2 + 91^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 701 + ... + 896.

2¹⁵⁶⁵⁰⁶ is an apocalyptic number.

156506 is a deficient number, since it is larger than the sum of its proper divisors (116752).

156506 is a wasteful number, since it uses less digits than its factorization.

156506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 156506 is about 395.6083922265. The cubic root of 156506 is about 53.8902664157.

The spelling of 156506 in words is "one hundred fifty-six thousand, five hundred six".