149555 has 8 divisors (see below), whose sum is σ = 205152. Its totient is φ = 102528.

The previous prime is 149551. The next prime is 149561. The reversal of 149555 is 555941.

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 149555 - 2² = 149551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (25644).

2¹⁴⁹⁵⁵⁵ is an apocalyptic number.

149555 is a deficient number, since it is larger than the sum of its proper divisors (55597).

149555 is an equidigital number, since it uses as much as digits as its factorization.

149555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4285.

The product of its digits is 4500, while the sum is 29.

The square root of 149555 is about 386.7234153759. The cubic root of 149555 is about 53.0803338520.

The spelling of 149555 in words is "one hundred forty-nine thousand, five hundred fifty-five".