155135855 has 32 divisors (see below), whose sum is σ = 226867200. Its totient is φ = 99470592.

The previous prime is 155135843. The next prime is 155135867. The reversal of 155135855 is 558531551.

It is an interprime number because it is at equal distance from previous prime (155135843) and next prime (155135867).

It is a cyclic number.

It is not a de Polignac number, because 155135855 - 2⁶ = 155135791 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 (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51059 + ... + 54011.

It is an arithmetic number, because the mean of its divisors is an integer number (7089600).

Almost surely, 2^155135855 is an apocalyptic number.

155135855 is a deficient number, since it is larger than the sum of its proper divisors (71731345).

155135855 is a wasteful number, since it uses less digits than its factorization.

155135855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063.

The product of its digits is 75000, while the sum is 38.

The square root of 155135855 is about 12455.3544710699. The cubic root of 155135855 is about 537.3254295175.

The spelling of 155135855 in words is "one hundred fifty-five million, one hundred thirty-five thousand, eight hundred fifty-five".