155500655 has 8 divisors (see below), whose sum is σ = 196422000. Its totient is φ = 117853056.

The previous prime is 155500643. The next prime is 155500661. The reversal of 155500655 is 556005551.

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 155500655 - 2¹⁸ = 155238511 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818330 + ... + 818519.

It is an arithmetic number, because the mean of its divisors is an integer number (24552750).

Almost surely, 2^155500655 is an apocalyptic number.

155500655 is a deficient number, since it is larger than the sum of its proper divisors (40921345).

155500655 is a wasteful number, since it uses less digits than its factorization.

155500655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636873.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 155500655 is about 12469.9901764195. The cubic root of 155500655 is about 537.7462711379.

The spelling of 155500655 in words is "one hundred fifty-five million, five hundred thousand, six hundred fifty-five".