155155224 has 32 divisors (see below), whose sum is σ = 443301120. Its totient is φ = 44330016.

The previous prime is 155155211. The next prime is 155155229. The reversal of 155155224 is 422551551.

It is a junction number, because it is equal to n+sod(n) for n = 155155191 and 155155200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155155229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461604 + ... + 461939.

It is an arithmetic number, because the mean of its divisors is an integer number (13853160).

Almost surely, 2^155155224 is an apocalyptic number.

155155224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155155224 is an abundant number, since it is smaller than the sum of its proper divisors (288145896).

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

155155224 is a wasteful number, since it uses less digits than its factorization.

155155224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923559 (or 923555 counting only the distinct ones).

The product of its digits is 10000, while the sum is 30.

The square root of 155155224 is about 12456.1319838865. The cubic root of 155155224 is about 537.3477906133.

The spelling of 155155224 in words is "one hundred fifty-five million, one hundred fifty-five thousand, two hundred twenty-four".