155442155 has 16 divisors (see below), whose sum is σ = 204060384. Its totient is φ = 112730880.

The previous prime is 155442139. The next prime is 155442187. The reversal of 155442155 is 551244551.

It is not a de Polignac number, because 155442155 - 2⁴ = 155442139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16727 + ... + 24303.

It is an arithmetic number, because the mean of its divisors is an integer number (12753774).

Almost surely, 2^155442155 is an apocalyptic number.

155442155 is a deficient number, since it is larger than the sum of its proper divisors (48618229).

155442155 is a wasteful number, since it uses less digits than its factorization.

155442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966.

The product of its digits is 20000, while the sum is 32.

The square root of 155442155 is about 12467.6443244103. The cubic root of 155442155 is about 537.6788285440.

The spelling of 155442155 in words is "one hundred fifty-five million, four hundred forty-two thousand, one hundred fifty-five".