156851 has 4 divisors (see below), whose sum is σ = 158400. Its totient is φ = 155304.

The previous prime is 156841. The next prime is 156887. The reversal of 156851 is 158651.

156851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158651 = 59 ⋅2689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156851.

It is not an unprimeable number, because it can be changed into a prime (156841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611 + ... + 828.

It is an arithmetic number, because the mean of its divisors is an integer number (39600).

2¹⁵⁶⁸⁵¹ is an apocalyptic number.

156851 is a deficient number, since it is larger than the sum of its proper divisors (1549).

156851 is a wasteful number, since it uses less digits than its factorization.

156851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548.

The product of its digits is 1200, while the sum is 26.

The square root of 156851 is about 396.0441894537. The cubic root of 156851 is about 53.9298357127.

The spelling of 156851 in words is "one hundred fifty-six thousand, eight hundred fifty-one".