155487055 has 8 divisors (see below), whose sum is σ = 187407792. Its totient is φ = 123840768.

The previous prime is 155487053. The next prime is 155487077. The reversal of 155487055 is 550784551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155487055 - 2¹ = 155487053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155486999 and 155487017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155487053) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 67362 + ... + 69631.

It is an arithmetic number, because the mean of its divisors is an integer number (23425974).

Almost surely, 2^155487055 is an apocalyptic number.

155487055 is a deficient number, since it is larger than the sum of its proper divisors (31920737).

155487055 is a wasteful number, since it uses less digits than its factorization.

155487055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137225.

The product of its (nonzero) digits is 140000, while the sum is 40.

The square root of 155487055 is about 12469.4448553254. Note that the first 3 decimals coincide. The cubic root of 155487055 is about 537.7305936852.

The spelling of 155487055 in words is "one hundred fifty-five million, four hundred eighty-seven thousand, fifty-five".