155450 has 12 divisors (see below), whose sum is σ = 289230. Its totient is φ = 62160.

The previous prime is 155443. The next prime is 155453. The reversal of 155450 is 54551.

It can be written as a sum of positive squares in 3 ways, for example, as 89401 + 66049 = 299^2 + 257^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155453) 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 5 ways as a sum of consecutive naturals, for example, 1505 + ... + 1604.

2¹⁵⁵⁴⁵⁰ is an apocalyptic number.

155450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155450 is a deficient number, since it is larger than the sum of its proper divisors (133780).

155450 is a wasteful number, since it uses less digits than its factorization.

155450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 155450 is about 394.2714800743. The cubic root of 155450 is about 53.7687873751.

The spelling of 155450 in words is "one hundred fifty-five thousand, four hundred fifty".