156563 has 8 divisors (see below), whose sum is σ = 175296. Its totient is φ = 138600.

The previous prime is 156539. The next prime is 156577. The reversal of 156563 is 365651.

156563 = T₁₂ + T₁₃ + ... + T₉₇.

156563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 156563 - 2⁸ = 156307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308 + ... + 638.

It is an arithmetic number, because the mean of its divisors is an integer number (21912).

2¹⁵⁶⁵⁶³ is an apocalyptic number.

156563 is the 212-nd centered heptagonal number.

156563 is a deficient number, since it is larger than the sum of its proper divisors (18733).

156563 is a wasteful number, since it uses less digits than its factorization.

156563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385.

The product of its digits is 2700, while the sum is 26.

The square root of 156563 is about 395.6804266071. The cubic root of 156563 is about 53.8968079591.

The spelling of 156563 in words is "one hundred fifty-six thousand, five hundred sixty-three".