155842224 has 80 divisors (see below), whose sum is σ = 422496768. Its totient is φ = 49441536.

The previous prime is 155842223. The next prime is 155842241. The reversal of 155842224 is 422248551.

155842224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155842223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82539 + ... + 84405.

Almost surely, 2^155842224 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 155842224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211248384).

155842224 is an abundant number, since it is smaller than the sum of its proper divisors (266654544).

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

155842224 is a wasteful number, since it uses less digits than its factorization.

155842224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1956 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

The square root of 155842224 is about 12483.6783040897. The cubic root of 155842224 is about 538.1397167106.

The spelling of 155842224 in words is "one hundred fifty-five million, eight hundred forty-two thousand, two hundred twenty-four".