155449 has 8 divisors (see below), whose sum is σ = 181440. Its totient is φ = 130416.

The previous prime is 155443. The next prime is 155453. The reversal of 155449 is 944551.

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

It is a cyclic number.

It is not a de Polignac number, because 155449 - 2⁹ = 154937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162 + ... + 580.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2¹⁵⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

155449 is a deficient number, since it is larger than the sum of its proper divisors (25991).

155449 is an equidigital number, since it uses as much as digits as its factorization.

155449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 3600, while the sum is 28.

The square root of 155449 is about 394.2702119106. The cubic root of 155449 is about 53.7686720778.

The spelling of 155449 in words is "one hundred fifty-five thousand, four hundred forty-nine".