155118516 has 72 divisors (see below), whose sum is σ = 422837856. Its totient is φ = 44130240.

The previous prime is 155118511. The next prime is 155118517. The reversal of 155118516 is 615811551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155118511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194230 + ... + 195026.

It is an arithmetic number, because the mean of its divisors is an integer number (5872748).

Almost surely, 2^155118516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155118516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211418928).

155118516 is an abundant number, since it is smaller than the sum of its proper divisors (267719340).

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

155118516 is a wasteful number, since it uses less digits than its factorization.

155118516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1140 counting only the distinct ones).

The product of its digits is 6000, while the sum is 33.

The square root of 155118516 is about 12454.6584055927. The cubic root of 155118516 is about 537.3054104343.

The spelling of 155118516 in words is "one hundred fifty-five million, one hundred eighteen thousand, five hundred sixteen".