155313030 has 48 divisors (see below), whose sum is σ = 393429744. Its totient is φ = 39234240.

The previous prime is 155313029. The next prime is 155313047. The reversal of 155313030 is 30313551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155312988 and 155313006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3660 + ... + 18000.

It is an arithmetic number, because the mean of its divisors is an integer number (8196453).

Almost surely, 2^155313030 is an apocalyptic number.

155313030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155313030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196714872).

155313030 is an abundant number, since it is smaller than the sum of its proper divisors (238116714).

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

155313030 is a wasteful number, since it uses less digits than its factorization.

155313030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14389 (or 14370 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 155313030 is about 12462.4648444840. The cubic root of 155313030 is about 537.5299049523.

Adding to 155313030 its reverse (30313551), we get a palindrome (185626581).

The spelling of 155313030 in words is "one hundred fifty-five million, three hundred thirteen thousand, thirty".