155100816 has 120 divisors (see below), whose sum is σ = 483745080. Its totient is φ = 46061568.

The previous prime is 155100767. The next prime is 155100821. The reversal of 155100816 is 618001551.

155100816 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 4 ways, for example, as 13395600 + 141705216 = 3660^2 + 11904^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155100816.

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 23 ways as a sum of consecutive naturals, for example, 52860 + ... + 55716.

It is an arithmetic number, because the mean of its divisors is an integer number (4031209).

Almost surely, 2^155100816 is an apocalyptic number.

155100816 is a gapful number since it is divisible by the number (16) 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 155100816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241872540).

155100816 is an abundant number, since it is smaller than the sum of its proper divisors (328644264).

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

155100816 is a wasteful number, since it uses less digits than its factorization.

155100816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913 (or 2904 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 155100816 is about 12453.9478078238. The cubic root of 155100816 is about 537.2849730128.

The spelling of 155100816 in words is "one hundred fifty-five million, one hundred thousand, eight hundred sixteen".