156901 has 2 divisors, whose sum is σ = 156902. Its totient is φ = 156900.

The previous prime is 156899. The next prime is 156913. The reversal of 156901 is 109651.

156901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106276 + 50625 = 326^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 156901 - 2¹ = 156899 is a prime.

Together with 156899, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78450 + 78451.

It is an arithmetic number, because the mean of its divisors is an integer number (78451).

2¹⁵⁶⁹⁰¹ is an apocalyptic number.

It is an amenable number.

156901 is a deficient number, since it is larger than the sum of its proper divisors (1).

156901 is an equidigital number, since it uses as much as digits as its factorization.

156901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 156901 is about 396.1073086930. The cubic root of 156901 is about 53.9355655780.

The spelling of 156901 in words is "one hundred fifty-six thousand, nine hundred one".