155051 has 4 divisors (see below), whose sum is σ = 166992. Its totient is φ = 143112.

The previous prime is 155047. The next prime is 155069. The reversal of 155051 is 150551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155051 - 2² = 155047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155081) 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 3 ways as a sum of consecutive naturals, for example, 5951 + ... + 5976.

It is an arithmetic number, because the mean of its divisors is an integer number (41748).

2¹⁵⁵⁰⁵¹ is an apocalyptic number.

155051 is a deficient number, since it is larger than the sum of its proper divisors (11941).

155051 is a wasteful number, since it uses less digits than its factorization.

155051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 155051 is about 393.7651584384. The cubic root of 155051 is about 53.7227444293.

The spelling of 155051 in words is "one hundred fifty-five thousand, fifty-one".