155330000 has 150 divisors (see below), whose sum is σ = 438848586. Its totient is φ = 53088000.

The previous prime is 155329987. The next prime is 155330051. The reversal of 155330000 is 33551.

It can be written as a sum of positive squares in 5 ways, for example, as 102738496 + 52591504 = 10136^2 + 7252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 489842 + ... + 490158.

Almost surely, 2^155330000 is an apocalyptic number.

155330000 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 155330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219424293).

155330000 is an abundant number, since it is smaller than the sum of its proper divisors (283518586).

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

155330000 is an equidigital number, since it uses as much as digits as its factorization.

155330000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 155330000 is about 12463.1456703354. The cubic root of 155330000 is about 537.5494816534.

Adding to 155330000 its reverse (33551), we get a palindrome (155363551).

The spelling of 155330000 in words is "one hundred fifty-five million, three hundred thirty thousand".