155079223 has 4 divisors (see below), whose sum is σ = 167008408. Its totient is φ = 143150040.

The previous prime is 155079191. The next prime is 155079251. The reversal of 155079223 is 322970551.

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 155079223 - 2⁵ = 155079191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155079283) 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, 5964573 + ... + 5964598.

It is an arithmetic number, because the mean of its divisors is an integer number (41752102).

Almost surely, 2^155079223 is an apocalyptic number.

155079223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155079223 is a deficient number, since it is larger than the sum of its proper divisors (11929185).

155079223 is a wasteful number, since it uses less digits than its factorization.

155079223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11929184.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 155079223 is about 12453.0808637863. The cubic root of 155079223 is about 537.2600384075.

The spelling of 155079223 in words is "one hundred fifty-five million, seventy-nine thousand, two hundred twenty-three".