155652224 has 192 divisors, whose sum is σ = 410235840. Its totient is φ = 58189824.

The previous prime is 155652223. The next prime is 155652227. The reversal of 155652224 is 422256551.

It is a super-2 number, since 2×155652224² = 48455229672292352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (155652223) 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, 1875287 + ... + 1875369.

It is an arithmetic number, because the mean of its divisors is an integer number (2136645).

Almost surely, 2^155652224 is an apocalyptic number.

155652224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155652224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205117920).

155652224 is an abundant number, since it is smaller than the sum of its proper divisors (254583616).

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

155652224 is a wasteful number, since it uses less digits than its factorization.

155652224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 128 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 155652224 is about 12476.0660466351. The cubic root of 155652224 is about 537.9209310609.

The spelling of 155652224 in words is "one hundred fifty-five million, six hundred fifty-two thousand, two hundred twenty-four".