156545 has 8 divisors (see below), whose sum is σ = 190080. Its totient is φ = 123760.

The previous prime is 156539. The next prime is 156577. The reversal of 156545 is 545651.

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

It is not a de Polignac number, because 156545 - 2¹⁰ = 155521 is a prime.

It is an Ulam number.

Its product of digits (3000) is a multiple of the sum of its prime divisors (375).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536 + ... + 774.

It is an arithmetic number, because the mean of its divisors is an integer number (23760).

2¹⁵⁶⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

156545 is a deficient number, since it is larger than the sum of its proper divisors (33535).

156545 is a wasteful number, since it uses less digits than its factorization.

156545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375.

The product of its digits is 3000, while the sum is 26.

The square root of 156545 is about 395.6576803248. The cubic root of 156545 is about 53.8947423801.

The spelling of 156545 in words is "one hundred fifty-six thousand, five hundred forty-five".