155216600 has 96 divisors (see below), whose sum is σ = 449971200. Its totient is φ = 48374400.

The previous prime is 155216599. The next prime is 155216603. The reversal of 155216600 is 6612551.

It is a self number, because there is not a number n which added to its sum of digits gives 155216600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155216603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10361 + ... + 20439.

It is an arithmetic number, because the mean of its divisors is an integer number (4687200).

Almost surely, 2^155216600 is an apocalyptic number.

155216600 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 155216600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224985600).

155216600 is an abundant number, since it is smaller than the sum of its proper divisors (294754600).

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

155216600 is a wasteful number, since it uses less digits than its factorization.

155216600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10113 (or 10104 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 155216600 is about 12458.5954264516. The cubic root of 155216600 is about 537.4186356018.

The spelling of 155216600 in words is "one hundred fifty-five million, two hundred sixteen thousand, six hundred".