155543055 has 16 divisors (see below), whose sum is σ = 249061344. Its totient is φ = 82892160.

The previous prime is 155543023. The next prime is 155543117. The reversal of 155543055 is 550345551.

It is not a de Polignac number, because 155543055 - 2⁵ = 155543023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21117 + ... + 27513.

It is an arithmetic number, because the mean of its divisors is an integer number (15566334).

Almost surely, 2^155543055 is an apocalyptic number.

155543055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155543055 is a deficient number, since it is larger than the sum of its proper divisors (93518289).

155543055 is a wasteful number, since it uses less digits than its factorization.

155543055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8026.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 155543055 is about 12471.6901420778. The cubic root of 155543055 is about 537.7951420358.

The spelling of 155543055 in words is "one hundred fifty-five million, five hundred forty-three thousand, fifty-five".