155029 has 4 divisors (see below), whose sum is σ = 177184. Its totient is φ = 132876.

The previous prime is 155027. The next prime is 155047. The reversal of 155029 is 920551.

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: 920551 = 61 ⋅15091.

It is a cyclic number.

It is not a de Polignac number, because 155029 - 2¹ = 155027 is a prime.

155029 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155027) 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, 11067 + ... + 11080.

It is an arithmetic number, because the mean of its divisors is an integer number (44296).

2¹⁵⁵⁰²⁹ is an apocalyptic number.

It is an amenable number.

155029 is a deficient number, since it is larger than the sum of its proper divisors (22155).

155029 is an equidigital number, since it uses as much as digits as its factorization.

155029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22154.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 155029 is about 393.7372220149. The cubic root of 155029 is about 53.7202034239.

The spelling of 155029 in words is "one hundred fifty-five thousand, twenty-nine".