155881229 has 8 divisors (see below), whose sum is σ = 178230720. Its totient is φ = 133551936.

The previous prime is 155881217. The next prime is 155881249. The reversal of 155881229 is 922188551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155881229 - 2⁴ = 155881213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155881249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19397 + ... + 26229.

It is an arithmetic number, because the mean of its divisors is an integer number (22278840).

Almost surely, 2^155881229 is an apocalyptic number.

It is an amenable number.

155881229 is a deficient number, since it is larger than the sum of its proper divisors (22349491).

155881229 is an equidigital number, since it uses as much as digits as its factorization.

155881229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099.

The product of its digits is 57600, while the sum is 41.

The square root of 155881229 is about 12485.2404462229. The cubic root of 155881229 is about 538.1846090985.

The spelling of 155881229 in words is "one hundred fifty-five million, eight hundred eighty-one thousand, two hundred twenty-nine".