155500555 has 16 divisors (see below), whose sum is σ = 214677504. Its totient is φ = 105919200.

The previous prime is 155500511. The next prime is 155500607. The reversal of 155500555 is 555005551.

It is not a de Polignac number, because 155500555 - 2⁹ = 155500043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9427 + ... + 19996.

It is an arithmetic number, because the mean of its divisors is an integer number (13417344).

Almost surely, 2^155500555 is an apocalyptic number.

155500555 is a deficient number, since it is larger than the sum of its proper divisors (59176949).

155500555 is a wasteful number, since it uses less digits than its factorization.

155500555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29586.

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 155500555 is about 12469.9861667926. The cubic root of 155500555 is about 537.7461558658.

The spelling of 155500555 in words is "one hundred fifty-five million, five hundred thousand, five hundred fifty-five".