158555655 has 24 divisors (see below), whose sum is σ = 275829840. Its totient is φ = 84255360.

The previous prime is 158555623. The next prime is 158555659. The reversal of 158555655 is 556555851.

158555655 is a `hidden beast` number, since 1 + 5 + 85 + 5 + 565 + 5 = 666.

It is not a de Polignac number, because 158555655 - 2⁵ = 158555623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 158555655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158555659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6376 + ... + 18914.

It is an arithmetic number, because the mean of its divisors is an integer number (11492910).

Almost surely, 2^158555655 is an apocalyptic number.

158555655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

158555655 is a deficient number, since it is larger than the sum of its proper divisors (117274185).

158555655 is a wasteful number, since it uses less digits than its factorization.

158555655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12831 (or 12828 counting only the distinct ones).

The product of its digits is 750000, while the sum is 45.

The square root of 158555655 is about 12591.8884604336. Note that the first 3 decimals coincide. The cubic root of 158555655 is about 541.2450182397.

The spelling of 158555655 in words is "one hundred fifty-eight million, five hundred fifty-five thousand, six hundred fifty-five".