155655155 has 4 divisors (see below), whose sum is σ = 186786192. Its totient is φ = 124524120.

The previous prime is 155655131. The next prime is 155655167. The reversal of 155655155 is 551556551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 155655155 - 2⁶ = 155655091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15565511 + ... + 15565520.

It is an arithmetic number, because the mean of its divisors is an integer number (46696548).

Almost surely, 2^155655155 is an apocalyptic number.

155655155 is a deficient number, since it is larger than the sum of its proper divisors (31131037).

155655155 is an equidigital number, since it uses as much as digits as its factorization.

155655155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31131036.

The product of its digits is 93750, while the sum is 38.

The square root of 155655155 is about 12476.1835109941. The cubic root of 155655155 is about 537.9243074691.

The spelling of 155655155 in words is "one hundred fifty-five million, six hundred fifty-five thousand, one hundred fifty-five".