155310000 has 200 divisors, whose sum is σ = 520633344. Its totient is φ = 39840000.

The previous prime is 155309989. The next prime is 155310049. The reversal of 155310000 is 13551.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×155310000² = 48242392200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 929917 + ... + 930083.

Almost surely, 2^155310000 is an apocalyptic number.

155310000 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 155310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260316672).

155310000 is an abundant number, since it is smaller than the sum of its proper divisors (365323344).

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

155310000 is a wasteful number, since it uses less digits than its factorization.

155310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 155310000 is about 12462.3432788541. The cubic root of 155310000 is about 537.5264093748.

Adding to 155310000 its reverse (13551), we get a palindrome (155323551).

The spelling of 155310000 in words is "one hundred fifty-five million, three hundred ten thousand".