155506236 has 48 divisors (see below), whose sum is σ = 376924800. Its totient is φ = 49839552.

The previous prime is 155506217. The next prime is 155506237. The reversal of 155506236 is 632605551.

It is a junction number, because it is equal to n+sod(n) for n = 155506197 and 155506206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155506237) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 97695 + ... + 99273.

It is an arithmetic number, because the mean of its divisors is an integer number (7852600).

Almost surely, 2^155506236 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 155506236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188462400).

155506236 is an abundant number, since it is smaller than the sum of its proper divisors (221418564).

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

155506236 is a wasteful number, since it uses less digits than its factorization.

155506236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 155506236 is about 12470.2139516530. The cubic root of 155506236 is about 537.7527043927.

The spelling of 155506236 in words is "one hundred fifty-five million, five hundred six thousand, two hundred thirty-six".