155445200 has 60 divisors (see below), whose sum is σ = 375308940. Its totient is φ = 61870080.

The previous prime is 155445193. The next prime is 155445217. The reversal of 155445200 is 2544551.

155445200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 25120144 + 130325056 = 5012^2 + 11416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155445200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90752 + ... + 92448.

It is an arithmetic number, because the mean of its divisors is an integer number (6255149).

Almost surely, 2^155445200 is an apocalyptic number.

155445200 is a gapful number since it is divisible by the number (10) 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 155445200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187654470).

155445200 is an abundant number, since it is smaller than the sum of its proper divisors (219863740).

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

155445200 is a wasteful number, since it uses less digits than its factorization.

155445200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944 (or 1933 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 155445200 is about 12467.7664399041. The cubic root of 155445200 is about 537.6823394349.

Adding to 155445200 its reverse (2544551), we get a palindrome (157989751).

The spelling of 155445200 in words is "one hundred fifty-five million, four hundred forty-five thousand, two hundred".