155105300 has 72 divisors (see below), whose sum is σ = 393683136. Its totient is φ = 51932160.

The previous prime is 155105299. The next prime is 155105309. The reversal of 155105300 is 3501551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155105309) 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 23 ways as a sum of consecutive naturals, for example, 27524 + ... + 32676.

Almost surely, 2^155105300 is an apocalyptic number.

155105300 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 155105300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196841568).

155105300 is an abundant number, since it is smaller than the sum of its proper divisors (238577836).

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

155105300 is a wasteful number, since it uses less digits than its factorization.

155105300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217 (or 5210 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 155105300 is about 12454.1278297599. The cubic root of 155105300 is about 537.2901506400.

Adding to 155105300 its reverse (3501551), we get a palindrome (158606851).

The spelling of 155105300 in words is "one hundred fifty-five million, one hundred five thousand, three hundred".