155223526873 has 4 divisors (see below), whose sum is σ = 155224511460. Its totient is φ = 155222542288.

The previous prime is 155223526807. The next prime is 155223526891. The reversal of 155223526873 is 378625322551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 47699870409 + 107523656464 = 218403^2 + 327908^2 .

It is a cyclic number.

It is not a de Polignac number, because 155223526873 - 2⁹ = 155223526361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155223526273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196618 + ... + 590851.

It is an arithmetic number, because the mean of its divisors is an integer number (38806127865).

Almost surely, 2^155223526873 is an apocalyptic number.

It is an amenable number.

155223526873 is a deficient number, since it is larger than the sum of its proper divisors (984587).

155223526873 is an equidigital number, since it uses as much as digits as its factorization.

155223526873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984586.

The product of its digits is 3024000, while the sum is 49.

The spelling of 155223526873 in words is "one hundred fifty-five billion, two hundred twenty-three million, five hundred twenty-six thousand, eight hundred seventy-three".