155250045173 has 2 divisors, whose sum is σ = 155250045174. Its totient is φ = 155250045172.

The previous prime is 155250045143. The next prime is 155250045199. The reversal of 155250045173 is 371540052551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148939649329 + 6310395844 = 385927^2 + 79438^2 .

It is a cyclic number.

It is not a de Polignac number, because 155250045173 - 2⁶ = 155250045109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155250045143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77625022586 + 77625022587.

It is an arithmetic number, because the mean of its divisors is an integer number (77625022587).

Almost surely, 2^155250045173 is an apocalyptic number.

It is an amenable number.

155250045173 is a deficient number, since it is larger than the sum of its proper divisors (1).

155250045173 is an equidigital number, since it uses as much as digits as its factorization.

155250045173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105000, while the sum is 38.

The spelling of 155250045173 in words is "one hundred fifty-five billion, two hundred fifty million, forty-five thousand, one hundred seventy-three".