155073 has 4 divisors (see below), whose sum is σ = 206768. Its totient is φ = 103380.

The previous prime is 155069. The next prime is 155081. The reversal of 155073 is 370551.

It is a happy number.

155073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 370551 = 3 ⋅123517.

It is not a de Polignac number, because 155073 - 2² = 155069 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (155003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25843 + ... + 25848.

It is an arithmetic number, because the mean of its divisors is an integer number (51692).

2¹⁵⁵⁰⁷³ is an apocalyptic number.

It is an amenable number.

155073 is a deficient number, since it is larger than the sum of its proper divisors (51695).

155073 is an equidigital number, since it uses as much as digits as its factorization.

155073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51694.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 155073 is about 393.7930928800. The cubic root of 155073 is about 53.7252851943.

The spelling of 155073 in words is "one hundred fifty-five thousand, seventy-three".