155885243 has 4 divisors (see below), whose sum is σ = 158826528. Its totient is φ = 152943960.

The previous prime is 155885227. The next prime is 155885263. The reversal of 155885243 is 342588551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155885243 - 2⁴ = 155885227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155885243.

It is not an unprimeable number, because it can be changed into a prime (155885263) 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, 1470563 + ... + 1470668.

It is an arithmetic number, because the mean of its divisors is an integer number (39706632).

Almost surely, 2^155885243 is an apocalyptic number.

155885243 is a deficient number, since it is larger than the sum of its proper divisors (2941285).

155885243 is an equidigital number, since it uses as much as digits as its factorization.

155885243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941284.

The product of its digits is 192000, while the sum is 41.

The square root of 155885243 is about 12485.4011949957. The cubic root of 155885243 is about 538.1892285439.

The spelling of 155885243 in words is "one hundred fifty-five million, eight hundred eighty-five thousand, two hundred forty-three".