155306900 has 144 divisors (see below), whose sum is σ = 421972992. Its totient is φ = 48384000.

The previous prime is 155306897. The next prime is 155306929. The reversal of 155306900 is 9603551.

155306900 = T₄₈₉ + T₄₉₀ + ... + T₁₀₁₅.

It is a super-2 number, since 2×155306900² = 48240466375220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 368690 + ... + 369110.

It is an arithmetic number, because the mean of its divisors is an integer number (2930368).

Almost surely, 2^155306900 is an apocalyptic number.

155306900 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 155306900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210986496).

155306900 is an abundant number, since it is smaller than the sum of its proper divisors (266666092).

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

155306900 is a wasteful number, since it uses less digits than its factorization.

155306900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 155306900 is about 12462.2189035500. The cubic root of 155306900 is about 537.5228329943.

The spelling of 155306900 in words is "one hundred fifty-five million, three hundred six thousand, nine hundred".