155112300 has 288 divisors, whose sum is σ = 591628800. Its totient is φ = 34110720.

The previous prime is 155112283. The next prime is 155112317. The reversal of 155112300 is 3211551.

It is an interprime number because it is at equal distance from previous prime (155112283) and next prime (155112317).

It is a super-2 number, since 2×155112300² = 48119651222580000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 547959 + ... + 548241.

Almost surely, 2^155112300 is an apocalyptic number.

155112300 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 155112300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295814400).

155112300 is an abundant number, since it is smaller than the sum of its proper divisors (436516500).

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

155112300 is a wasteful number, since it uses less digits than its factorization.

155112300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 155112300 is about 12454.4088579105. The cubic root of 155112300 is about 537.2982332661.

Adding to 155112300 its reverse (3211551), we get a palindrome (158323851).

The spelling of 155112300 in words is "one hundred fifty-five million, one hundred twelve thousand, three hundred".