155134522171 has 2 divisors, whose sum is σ = 155134522172. Its totient is φ = 155134522170.

The previous prime is 155134522073. The next prime is 155134522183. The reversal of 155134522171 is 171225431551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155134522171 - 2¹³ = 155134513979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155134522171.

It is not a weakly prime, because it can be changed into another prime (155134522271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77567261085 + 77567261086.

It is an arithmetic number, because the mean of its divisors is an integer number (77567261086).

Almost surely, 2^155134522171 is an apocalyptic number.

155134522171 is a deficient number, since it is larger than the sum of its proper divisors (1).

155134522171 is an equidigital number, since it uses as much as digits as its factorization.

155134522171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 37.

The spelling of 155134522171 in words is "one hundred fifty-five billion, one hundred thirty-four million, five hundred twenty-two thousand, one hundred seventy-one".