155155155 has 16 divisors (see below), whose sum is σ = 256257024. Its totient is φ = 80079840.

The previous prime is 155155153. The next prime is 155155163. The reversal of 155155155 is 551551551.

It is not a de Polignac number, because 155155155 - 2¹ = 155155153 is a prime.

It is a nude number because it is divisible by every one of its digits.

155155155 is a modest number, since divided by 155155 gives 155 as remainder.

It is not an unprimeable number, because it can be changed into a prime (155155153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166369 + ... + 167298.

It is an arithmetic number, because the mean of its divisors is an integer number (16016064).

Almost surely, 2^155155155 is an apocalyptic number.

155155155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155155155 is a deficient number, since it is larger than the sum of its proper divisors (101101869).

155155155 is a wasteful number, since it uses less digits than its factorization.

155155155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333706.

The product of its digits is 15625, while the sum is 33.

The square root of 155155155 is about 12456.1292141660. The cubic root of 155155155 is about 537.3477109576.

The spelling of 155155155 in words is "one hundred fifty-five million, one hundred fifty-five thousand, one hundred fifty-five".