155040163 has 2 divisors, whose sum is σ = 155040164. Its totient is φ = 155040162.

The previous prime is 155040161. The next prime is 155040191. The reversal of 155040163 is 361040551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155040163 - 2¹ = 155040161 is a prime.

Together with 155040161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (155040161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77520081 + 77520082.

It is an arithmetic number, because the mean of its divisors is an integer number (77520082).

Almost surely, 2^155040163 is an apocalyptic number.

155040163 is a deficient number, since it is larger than the sum of its proper divisors (1).

155040163 is an equidigital number, since it uses as much as digits as its factorization.

155040163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 155040163 is about 12451.5124784100. The cubic root of 155040163 is about 537.2149278316.

The spelling of 155040163 in words is "one hundred fifty-five million, forty thousand, one hundred sixty-three".