149855 has 16 divisors (see below), whose sum is σ = 199584. Its totient is φ = 107520.

The previous prime is 149839. The next prime is 149861. The reversal of 149855 is 558941.

It is not a de Polignac number, because 149855 - 2⁴ = 149839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3464 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (12474).

2¹⁴⁹⁸⁵⁵ is an apocalyptic number.

149855 is a deficient number, since it is larger than the sum of its proper divisors (49729).

149855 is a wasteful number, since it uses less digits than its factorization.

149855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106.

The product of its digits is 7200, while the sum is 32.

The square root of 149855 is about 387.1110951652. Note that the first 3 decimals coincide. The cubic root of 149855 is about 53.1158023292.

The spelling of 149855 in words is "one hundred forty-nine thousand, eight hundred fifty-five".