155255555 has 32 divisors (see below), whose sum is σ = 241382400. Its totient is φ = 93094272.

The previous prime is 155255537. The next prime is 155255579. The reversal of 155255555 is 555552551.

It is a cyclic number.

It is not a de Polignac number, because 155255555 - 2²⁰ = 154206979 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335 + ... + 17624.

It is an arithmetic number, because the mean of its divisors is an integer number (7543200).

Almost surely, 2^155255555 is an apocalyptic number.

155255555 is a deficient number, since it is larger than the sum of its proper divisors (86126845).

155255555 is a wasteful number, since it uses less digits than its factorization.

155255555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18003.

The product of its digits is 156250, while the sum is 38.

The square root of 155255555 is about 12460.1587068544. The cubic root of 155255555 is about 537.4635908274.

The spelling of 155255555 in words is "one hundred fifty-five million, two hundred fifty-five thousand, five hundred fifty-five".