155543256 has 96 divisors (see below), whose sum is σ = 461869200. Its totient is φ = 46897920.

The previous prime is 155543249. The next prime is 155543347. The reversal of 155543256 is 652345551.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 155543256.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 219030 + ... + 219738.

Almost surely, 2^155543256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155543256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230934600).

155543256 is an abundant number, since it is smaller than the sum of its proper divisors (306325944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155543256 is a wasteful number, since it uses less digits than its factorization.

155543256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1002 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 155543256 is about 12471.6982003254. The cubic root of 155543256 is about 537.7953736903.

The spelling of 155543256 in words is "one hundred fifty-five million, five hundred forty-three thousand, two hundred fifty-six".