155140055 has 16 divisors (see below), whose sum is σ = 213373440. Its totient is φ = 106076832.

The previous prime is 155140043. The next prime is 155140081. The reversal of 155140055 is 550041551.

It is a cyclic number.

It is not a de Polignac number, because 155140055 - 2⁸ = 155139799 is a prime.

It is a congruent 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, 6392 + ... + 18738.

It is an arithmetic number, because the mean of its divisors is an integer number (13335840).

Almost surely, 2^155140055 is an apocalyptic number.

155140055 is a deficient number, since it is larger than the sum of its proper divisors (58233385).

155140055 is a wasteful number, since it uses less digits than its factorization.

155140055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12718.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 155140055 is about 12455.5230721154. The cubic root of 155140055 is about 537.3302784856.

The spelling of 155140055 in words is "one hundred fifty-five million, one hundred forty thousand, fifty-five".