155120616 has 64 divisors (see below), whose sum is σ = 492451200. Its totient is φ = 44319744.

The previous prime is 155120593. The next prime is 155120627. The reversal of 155120616 is 616021551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 155120616.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 49785 + ... + 52808.

It is an arithmetic number, because the mean of its divisors is an integer number (7694550).

Almost surely, 2^155120616 is an apocalyptic number.

It is an amenable number.

155120616 is an abundant number, since it is smaller than the sum of its proper divisors (337330584).

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

155120616 is a wasteful number, since it uses less digits than its factorization.

155120616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102615 (or 102605 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 155120616 is about 12454.7427111121. The cubic root of 155120616 is about 537.3078351100.

The spelling of 155120616 in words is "one hundred fifty-five million, one hundred twenty thousand, six hundred sixteen".