155485871 has 2 divisors, whose sum is σ = 155485872. Its totient is φ = 155485870.

The previous prime is 155485867. The next prime is 155485879. The reversal of 155485871 is 178584551.

It is a weak prime.

It is an emirp because it is prime and its reverse (178584551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155485871 - 2² = 155485867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155485879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77742935 + 77742936.

It is an arithmetic number, because the mean of its divisors is an integer number (77742936).

Almost surely, 2^155485871 is an apocalyptic number.

155485871 is a deficient number, since it is larger than the sum of its proper divisors (1).

155485871 is an equidigital number, since it uses as much as digits as its factorization.

155485871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224000, while the sum is 44.

The square root of 155485871 is about 12469.3973791840. The cubic root of 155485871 is about 537.7292287813.

The spelling of 155485871 in words is "one hundred fifty-five million, four hundred eighty-five thousand, eight hundred seventy-one".