155565234 has 48 divisors (see below), whose sum is σ = 376687584. Its totient is φ = 45988800.

The previous prime is 155565203. The next prime is 155565239. The reversal of 155565234 is 432565551.

155565234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (155565239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1464 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (7847658).

Almost surely, 2^155565234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155565234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188343792).

155565234 is an abundant number, since it is smaller than the sum of its proper divisors (221122350).

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

155565234 is a wasteful number, since it uses less digits than its factorization.

155565234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19223 (or 19220 counting only the distinct ones).

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

The square root of 155565234 is about 12472.5792841737. The cubic root of 155565234 is about 537.8207023575.

The spelling of 155565234 in words is "one hundred fifty-five million, five hundred sixty-five thousand, two hundred thirty-four".